Chargaff's rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.
Explanation:Complementary base pairs refer to the nitrogenous bases adenine, thymine, cytosine, and guanine. in a double strand of DNA, adenine will always pair with its complement thymine and cytosine will always pair with its complement guanine. This means that the two strands are complementary to each other. For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT.
The moorish idol fish lives in coral reefs around the world. its oceanic environment is saltier than the environment inside its cells. the idol fish requires energy to maintain the environment in its cells. which structure in a moorish idol fish's cells produces the energy it needs?
The shape of a Moorish idol fish's cells produces the strength it needs is mitochondria.
Moorish idols are pelagic spawners; this is, they launch eggs and sperm inside the water column, leaving fertilized eggs to drift away with the currents. Moorish idols, Zanclus cornutus, prefer flat reefs in depths between three m – 182 m and may be observed in both clear and murky subtropical glasses of water, including internal lagoons, and rocky and coral reefs.
Moorish idols will often choose at massive polypod stony corals and certain gentle coral polyps. despite the fact that this fish commonly eats coralline algae and sponges in nature, this does not imply that it might not choose different styles of sessile invertebrates, or perhaps even motile crustaceans.
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Why are venus flytraps a plant not animal?
Answer:
As photosynthetic plants, Venus flytraps do not rely on carnivory for energy but rather use the nitrogen-rich animal proteins to enable their survival in marginal soil conditions.
Don't know if i'm right but hopefully, lol
The Venus flytrap, a small perennial herb, is one of the most widely recognized carnivorous plant species on Earth. It occupies distinct longleaf pine habitats in the Coastal Plain and Sandhills of North and South Carolina.
a large population of laboratory animals has been allowed to breed randomly for a number of generations. after several generations, 25% of the animals display a recessive trait (a2a2), the same percent as at the beginning of the breeding program. the rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants. what proportion of the population is most likely heterozygous (a1a2) for this trait?
We know that frequency of recessive individual in the total population is equal to the proportion of the population is most likely heterozygous (a1a2) for this trait is 0.50. correct option is (C).
Heterozygotes are indistinguishable from the homozygous dominants
This means that the phenotype of offspring with genotype Aa and AA would be the same. One who possesses distinct or non-identical alleles for a specific trait at the same locus on homologous chromosomes is said to be heterozygous. This definition applies to cells, nuclei, and entire organisms. In contrast to homozygosity, in which the alleles are identical, it signifies that the alleles that code for the same gene or trait are different.
A diploid is a living thing or cellular entity that has two chromosomal sets. Both sets have their origins in the father and the mother, respectively.
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The question was incomplete. Check below the complete question.
There has been sexual selection favoring allele a. A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (aa), the same percentage as at the beginning of the breeding program. he rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants. what proportion of the population is most likely heterozygous (a1a2) for this trait?
A) 0.05
B) 0.25
C) 0.50
D) 0.75
What type of mutation results from the addition of extra basesa. Duplicationb. Inversionc. Insertiond. Translocatione. Substitutionf. Deletion
The addition of one or more nucleotide base pairs into a DNA sequence happens due to polymerase slipping and it's called insertion. Therefore, the correct answer is c. Insertion
how does an enzyme affect the biochemical reactions in the real world?
Answer:
"The enzyme speeds up the reaction by lowering the activation energy needed for the reaction to start." "compare the activation energy with and without the enzyme. Enzymes generally lower activation energy by reducing the energy needed for reactions to come together and react."
(20)Select the type of inheritance pattern that is best described below:
There are three different alleles for a blood group –IA, IB, and i – but an individual has only two at a time:
a
Pleiotropy
b
Incomplete Dominance
c
Codominance
d
Polygenic Inheritance
e
Multiple Alleles
Type of inheritance pattern that is best described below is Multiple Alleles.
Multiple alleles are the alternative forms of the same gene so they influence the same trait. The wild-type allele is mostly dominant over the mutant alleles.
Multiple alleles exist in a population when there are many variations of a gene present. In organisms with two copies of every gene, also known as diploid organisms, each organism has the ability to express two alleles at the same time. They can be the same allele, which is called a homozygous genotype. Multiple allelism, occurs when more than two gene forms exist for the same locus.
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please be quick
don’t guess
Answer:
c
Explanation:
alternative processing of an mrna primary transcript may result in: group of answer choices a shift in the ratio of mrna produced from two adjacent genes.
Alternative processing of an mRNA primary transcript may result in the formation mature mRNA
What is a primary transcript ?When an RNA transcript is first made in a eukaryotic cell, it is considered a pre-mRNA or primary transcript and must be processed into messenger RNA (mRNA).
The primary transcript is modified to form the mature mRNA. Primary RNA transcripts synthesized by RNA polymerase II (mRNA) are modified in the nucleus by three distinct reactions: addition of the 5' cap, addition of a poly-adenylic acid (poly-A) tail, and non-informative introns. Segment excision. During transcription of mRNA in eukaryotes, some sequences are excised from the primary transcript and the remaining sequences are joined. This processing of mRNA is called splicing. Alternative splicing of precursor mRNAs is an essential mechanism for increasing the complexity of gene expression and plays an important role in cell differentiation and organismal development.
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What aspect of agriculture has a negative effect on biodiversity and ecosystem stability?OA. Species evenessOB. MonocultureOC. EndemismOD. HotspotsReset SelectionDELL
Monocultures have negative effects on the ecosystem mainly because they reduce biodiversity.
As there is only one plant species in agricultural crops, the species residing there are endangered because their usual habitat is destroyed and the organisms move to another area.
When there is a failure to control the cell cycle, resulting in uncontrolled cell growth it is known as?.
When there is a failure to control the cell cycle, resulting in uncontrolled cell growth it is known as cancer.
Cancer can be described as a condition in which particular cells of the body start to divide in an uncontrolled manner. As a result of this uncontrolled division, the cells of the own body turn out to be disruptive to the body.
If the cells keep on dividing in an uncontrolled manner, they will keep on multiplying and spreading to different parts of the body.
Due to these uncontrolled divisions, cancer can be a threatful disease and diagnosing it during the early stages gives more chances of survival than the later ones.
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In some species of plants, mutations can cause a plant to have different patterns on their leaves, such as gold edges or whitestripes. Plants with different patterns grow to the same size and produce offspring with similar patterns. However, these plants canhave high mutation rates. As a result, a group of related plants can exhibit many patterns.Which of the following statements does this example support?OA. A mutation that is not helpful to an organism's survival will not be passed on.OB. A mutation that has neutral effects on an organism's survival can be passed on to offspring.OC. Organisms increase their rate of mutations to add genetic variation to their species.OD. Organisms choose not to produce proteins from harmful mutations.ResetSubmit
We have to consider that not all inherited mutations are bad for us, as we can see in the example of the exercise. The statement that better describe this condition is the second one, the B option: "a mutation that has neutral effects on an organism's survival
alpha radiation is non-penetrating and therefore: group of answer choices it is dangerous only to the lungs it is dangerous to all body tissues it is not dangerous it is dangerous when ingested or inhaled and localizes in certain tissues none of the listed answers it is dangerous only to the bones
Alpha-emitters can harm delicate live tissue if they are eaten, breathed, or enter the body through a cut. These big, heavy particles are more hazardous than other radiation because of the way they affect things.
What is alpha radiation?The structure of alpha particles, also known as alpha rays or alpha radiation, is similar to that of the helium-4 nucleus and is made up of two protons and two neutrons bonded together. They can also be created in various ways, although typically they are created during the alpha decay process.
The subatomic particles known as alpha particles are made up of two neutrons and two protons. In order to restore balance, alpha particles are released when the nucleus of an atom becomes unstable (the ratio of neutrons to protons is too low).
Alpha-emitters can harm delicate live tissue if they are eaten, breathed, or enter the body through a cut. These big, heavy particles are more hazardous than other radiation because of the way they affect things.
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Laws change, constitutions get amended, and they do so because changes take place
in society that harbor that necessary change. If you could make a change in West
Virginia, in an Essay giving detail, what change would it be and why?
If I could make a change in West Virginia, the law will be in regards of arms possession by civilians.
Total Ban on arms possession by civilians in West Virginia.West Virginia is known to be a state that gives room for open carry without a permit. If a person is at least 18 years old and has a legal right to possess a handgun under state and federal law, they are permitted to carry a firearm openly without a license. There are some places that are off-limits, such courts and schools.
It is a society that recognizes the right to carry a concealed weapon within the state without first acquiring a concealed handgun license. This law may seems okay for some people, but its negative implications outweigh its advantages.
With the high rise in gun violence, there is therefore the need to amend this law. The Second Amendment does not protect concealed carry of arms, according to opponents of the practice, who also contend that police personnel with the appropriate training should be in charge of ensuring the protection of the public.
Therefore, i believe a total ban should me place on civilians carrying fire arms so as to protect the people from harm.
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A bacterium that is exposed to a toxin in its environment can make an enzyme to neutralize the toxin. The bacterium controls protein synthesis to produce the enzyme by activating an inducible operon. The activation of the operon causes the transcription of the mRNA that codes for the enzyme. The mRNA is then translated to make the specific enzyme needed to neutralize the toxin.
What phenomenon is demonstrated in this example?
A
Evolution by natural selection
B
Cell differentiation by prokaryotes
C
Adaptation to external stimuli
D
Regulation of gene expression
The phenomenon that is demonstrated in this example is adaptation to external stimuli. That is option C.
What is adaptation?Adaptation is defined as the ability of an organism to adjust to its every changing environment in order to survive and reproduce.
From the example given in the question, the bacteria was exposed to a toxin in its environment but the bacteria was able to adapt through the production of an enzyme the neutralises the toxin.
The bacteria was able to produce the neutralising enzymes through activating an inducible operon that causes the transcription of the mRNA that codes for the enzyme.
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Approximately 90-95% of all cases of diabetes are classified as type 2. Type 2 diabetes is believed to be due to lifestyle factors and what?.
Even while not all people with type 2 diabetes are overweight, obesity and a sedentary lifestyle are two of the most typical risk factors. About 90% to 95% of diabetes cases in the US are caused by these factors.
To assist your body retain and use the sugar from the food you consume, your pancreas, an organ located beneath your stomach, releases insulin when you're healthy. Diabetes can result from any one or more of the following:
You don't produce any insulin in your pancreas.Very little insulin is produced by your pancreas.Insulin doesn't work as well as it should in your body.People with type 2 diabetes produce insulin, unlike those with type 1 diabetes. However, the amount of insulin their pancreas produces is insufficient, or their body is unable to adequately identify and utilize it. (Medicines refer to this as insulin resistance.)
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What will be the advantages and disadvantages if the world was covered in water?
Answer:
1) no water loss from evaporation
2)less temperature fluctuation
3)less light, so predators can't see them
4)avoid competition w/ terrestrial species
Is the exoplanet like earth in terms of its distance from its star? Explain your answer
The majority of known close-by exoplanets revolve around their sun. A handful have comparable masses to Earth, including planets at YZ Ceti, Gliese 367, and Proxima Centauri, which may be less massive than Earth. The bulk, however, are substantially larger than Earth.
What is an exoplanet ?
In our solar system, every planet revolves around the Sun. Exoplanets are planets that revolve around other stars. Exoplanets are extremely difficult to directly observe using telescopes. The intense light from the stars they orbit obscures them.
Therefore, astronomers employ various techniques to find and research these far-off planets. By observing the impacts that these planets have on the stars they circle, astronomers look for exoplanets.
The majority of known close-by exoplanets revolve around their sun. A handful have comparable masses to Earth, including planets at YZ Ceti, Gliese 367, and Proxima Centauri, which may be less massive than Earth. The bulk, however, are substantially larger than Earth.
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Help me with number 3!!!!!!!!!!!! Please
Answer: (D)
Explanation: All planets have circular orbits around the Sun. Comets have elliptical orbit.
what is it called when a concentration gradients are the same on either side of a membrane?
imagine that the middle head of the deltoid were the only muscle supporting the outstretched arm below. the muscle must support the weight of the arm plus a five pound weight. if we measured the force generated by the muscle is would be
If we measured the force generated by the muscle it would be more than 5 pounds.
Deltoid muscles play an important part in helping you move your arm in different directions. They also stabilize your shoulder joint and cover it from injuries analogous to dislocations. People who perform a lot of repeated above movements, analogous as insensibility, jugs, or mechanics, are at the trouble of injuring their deltoid muscles. utmost deltoid muscle injuries heal with nonsurgical treatments. The muscle supports the weight of the arm plus a five-pound weight.
It's present in your shoulder, which is the ball-and-socket joint that connects your arm to the box of your body. Like utmost other muscles in your body, the deltoids are cadaverous muscles. Tendons attach them to bones. Cadaverous muscles are voluntary muscles, meaning you choose to move them.
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Space review part 2, I need help on this! Giving brainliest to best answer
Answer:
terrestrial: mercury, venus, earth, & mars
gas/ice giants: jupiter, saturn, uranus, & neptune
Explanation:
Answer:
terrestrial;mercury,venus,earth&mars
gas/ice giants;jupiter,saturn,uranus & neptune
Explanation:
Which of the following statements accurately explains the relationship between time of day and water transport through the plants? (Answer choices in the photo, and a graph.)
The best option would be the letter B. At night, the stomata are closed so water in the leaves cannot evaporate, which reduces the need fro absorption of water at the root.
which may lead to an increase in the carrying capacity of the global human population? i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate
i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate. All of these may lead to an increase in the carrying capacity of the global human population.
Demographers often concentrate on four key variables when attempting to predict changes in population size: fertility rates, death rates (life expectancy), the population's beginning age profile (whether it is relatively elderly or young, to begin with), and migration.
Is there an exponential increase in the human population?
The number of people on the planet is increasing exponentially. Through migration, agriculture, technological advancements in medicine, and communication, humans have enhanced the world's carrying capacity. We can forecast population increase using a population's age distribution.
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i. consuming food at a lower trophic level ii. technological advancement iii. reduction in per capita consumption rate. All of these may lead to an increase in the carrying capacity of the global human population.
Demographers often concentrate on four key variables when attempting to predict changes in population size: fertility rates, death rates (life expectancy), the population's beginning age profile (whether it is relatively elderly or young, to begin with), and migration.
Is there an exponential increase in the human population?
The number of people on the planet is increasing exponentially. Through migration, agriculture, technological advancements in medicine, and communication, humans have enhanced the world's carrying capacity. We can forecast population increase using a population's age distribution.
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WHAT'S THE ANSWER??
geneticists often assume that map distances less than 7 to 8 map units (m.u.) are accurate. map distances that exceed this threshold significantly are assumed to be less accurate and the level of accuracy declines as map distances increase. briefly explain this observation.
The further apart two genes are the more likely it is that multiple crossovers will occur.
Even if there has been crossing over, the offspring may still have parental genotypes that are not considered recombinants if there is a double crossover (or an even number of crossovers) between two genes. Double crossings will cause the real map distance to be underestimated since genetic maps are constructed by counting visible recombinants in the progeny.
The middle allele is transferred from one sister chromatid to the other during a double-crossover event, which is the following crucial step. As a result, the surrounding genes' parental alleles and the non-parental allele of the middle gene are positioned on the same chromosome.
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(30 pts, I'm desperate... ;-;)Can an offspring with a recessive genotype have parents that both have the dominant genotype? Explain your answer
Answer:
A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, which can come from just one parent. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent.
What's it's saying is to have An offspring with Recessive genotype both parents must have at least one recessive alleles in their genotype
Pneumonia is an infectious disease in which fluid accumulates in the alveoli. Patients who are diagnosed with pneumonia are monitored for their oxygen saturation levels. Describe how pneumonia could affect the amount of oxygen in the blood.
Answer:
Pneumonia can prevent your lungs from moving enough oxygen into your bloodstream, causing less oxygen to be present in blood.
In eukaryotes, the components of citric acid cycling and the electron transport chain are located in the ____.
In eukaryotes, the citric acid cycle takes place in the mitochondrial matrix. Glycolysis occurs in the cytosol. Electron transport chain includes both the intermembrane space and the inner mitochondrial membrane.
Pyruvate from glycolysis is transported to mitochondrial matrix for the citric acid cycle to take place. The citric acid cycle is where acetyl CoA is modified in the mitochondria to produce energy precursors required for the next step.
The process where electron transport from the energy precursors from the citric acid cycle leads to the phosphorylation of ADP, producing ATP is Oxidative phosphorylation. The Electron transport chain is embedded within the extensive inner membrane of the mitochondrion close to the mitochondrial matrix in which the TCA cycle is localized .
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you might think they are all a part of the same group if you observe a flock of birds flying overhead, one right after the other. but if they were all very far apart, you might only see individual birds flying separately. which gestalt concept is utilized in this distinction? group of answer choices
According to the given statement Proximity gestalt concept is utilized in this distinction..
How do birds flock?His research demonstrated that birds do not simply follow a leader or their immediate neighborhood. Instead, they prepare for abrupt shifts in the flock's migration direction. And as the flock starts to change its course, he claimed, it "spreads across the flock in a wave."
Do birds swarm or flock?Thousands of these birds gather in captivating swarms, but it is still unclear why. The magnificent patterns that European starlings make in the sky cannot entirely be attributed to them being in defense against predators. The starling flocks in California form cordons, which are closely packed movements, when a falcon flies over the night sky.
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The principle of proximity, a Gestalt concept, is used in this differentiation. According to this theory, items that are near together are seen as a group, whereas those that are far apart are seen as individual beings. In the case of a flock of birds, their proximity provides a sense of oneness and causes us to perceive them as a group while they are flying close together. Yet, their proximity is diminished at a great distance, and we see the birds as individual birds flying apart. One of the Gestalt concepts that aid in the organization and comprehension of visual data is the idea of closeness.
What are the X and Y chromosomes