A key part of the Watson-Crick model came when Watson realized
that adenine could form hydrogen bonds with thymine and guanine
could form hydrogen bonds with cytosine. This explains why A=T
and G C in Chargaff's rules. Also, these two hydrogen-bonded
nucleotide pairs had the exact same width, so they could form the
rungs of the DNA ladder.
The fact that these pairs could match up only in this way meant that
the sequence of bases in one strand could determine the sequence
of bases in a second strand created from the first. The second strand
is said to be complementary to the first strand. Individual bases are
paired so that the identity of any base determines the identity of the
base paired with it; that is, the complementary base.
This table lists the base abbreviations for bases in a sample of single-
stranded DNA. Fill in the second column with the base abbreviations
that are complementary to the given bases.
I

Answer:

A–T

T–A

T–A

C–G

A–T

G–C

G–C

C–G

T–A

A–T

Explanation:

A always pairs up with T

C always pairs up with G

In “A Structure of Deoxyribose Nucleic Acid,” Watson and Crick defined DNA as a double helix that contained long, helical strands wound together. In their model, every DNA strand contained personal devices referred to as bases, and the bases alongside one DNA strand matched the bases alongside the opposite DNA strand.

Thus it is clear that the above answer is well explained.

To know more about the DNA  refer to the link :

https://brainly.com/question/1328358

____is the amount of matter in an object and is measured in kilograms.
A. Mass
B. Gravity
C. Newton
D. Weight

A minor object orbiting in a solar system is a(n)
asteroid
regolith
meteorite
meteor

Agricultural chemicals are one source of water pollution. What is one way we can reduce their effects?"
a. biological magnification
b. nonpoint source pollutant
c. integrated pest management
d. sewage treatment

lungs and capillaries both have porous linings that allow certain substances to move into or out of the structures. Which function do these porous linings most likely serve in living organisms?
A. heat release
B. gas exchange
C. carbohydrate absorption
D. osmotic pressure regulation

Why is the genetic code common to all organisms!

Inherited traits are:
A Dependent on diet
B Acquired during an organism's life
C Free of mutations
D Passed on from parent to offspring

Two cell organelles are described below.

Organelle A: Present in plant cells but not present in animal cells
Organelle B: Much larger in size in plant cells than in animal cells

Which of the following is most likely correct?

Organelle A is vacuole, Organelle B is chloroplast
Organelle A is chloroplast, Organelle B is vacuole
Organelle A is nucleus, Organelle B is mitochondria
Organelle A is mitochondria, Organelle B is nucleus

Which of the following are considered renewable resources?

Select all that apply.

A
Coal

B
Wind

C
Solar

D
Oil

The crust is the thickest layer of the earth true or false​

HELP PAST DUE AND NO WEBISTES/ FAKE LINKS

your own words: how does the temperture affect the denisty of the water? DO NOT COPY AND PASTE FROM THE INTERNET OR YOUR REPORTED!

Internal adaptations only apply to animals. Plants do not have internal adaptations.
true or false
pls help

what can you conclude about the connection between a leaf's size and the amount of sunlight it absorbs?


(a). The smaller a leaf is, the more sunlight it absorbs.

(b). The larger a leaf is, the more sunlight it absorbs.

(c). The connection between the size of a leaf and the amount of sunlight it absorbs cannot be predicted.

(d). Large leaves and small leaves absorb about the same amount of sunlight.

The image below represents two waves X and Y, traveling to the same medium at the same speed how are the two waves different?

What would happen to the darker colored moths if the forest was light colored?

True or falseThe study of where organisms live and how they got to specific places is called Biodiversity .

What type of sex chromosome will be contained by the sex cells of a female giraffe?
A. X chromosome
B. Y chromosome
C. X and Y chromosome ​

Using the allele symbols in the table, identify the genotype of a guinea pig that is recessive for hair length, heterozygous for hair color, and homzygous dominant for hair texture.

fossils of marine organisms hi in the Andes mountains lead Darwin to conclude that???

How is efficiency related to systems?

Our environment is sometimes divided into different spheres, including the geosphere, hydrosphere, cryosphere, atmosphere, and biosphere. Interactions between the geosphere and atmosphere can have an impact on Earth’s weather. Which of the following is an example of an interaction between the geosphere and atmosphere?




1.Melting of ice from a glacier into a body of water


2.Eruption of lava, gases, and ash from a volcano


3.Evaporation of water from the ocean


4.Animals completing cell respiration and exhaling CO2

T/F we make synthetic materials to serve different purposes that meet our wants and needs

Match the definition to the correct term.


a vesicle of enzymes in a cell

a flatworm that can cause digestive and respiratory infections

an animal that digests plant material in a separate stomach compartment


:: lysosome

:: fluke

:: ruminant

Carbon that is stored for millions of years is found in the form of

all plant bodies(root,stem and leaf) are externally covered by epidermis but why woody plant is covered by barks​

Match the position to the closest estimation of its current career outlook.
agricultural engineer
landscape architect
agricultural managers
loss of more than 5 percent
:: growth of more than 15 percent
growth of less than 10 percent

50 points welp
Mums are plants that bloom in the fall.

Which statement describes the photoperiodism of mums?

They bloom when the days are longer.
They bloom when the nights are longer.
They bloom when the temperatures are warmer.
They bloom when the temperatures are colder.

Select the correct answer.
There was an overuse of fertilizers in William's farm. This led to the destruction of the crops, and William incurred huge losses. Which
management function was neglected in this process?
OA. organizing
OB. staffing
OC. planning
OD directing
O E. controlling

How did the polar bears get their white fur?A.Bears have various alleles for fur color ranging from dark to light. Those bears with the lighter fur had a better chance of survival in the biome, so they lived and reproduced passing on their light colored gene to their offspring. As generations passed, white fur became more common.B.As a polar bear grows up, its fur gradually gets lighter, so by the time they are a teenager, they have fully white fur and are then best suited to survive in their environment.C.Polar Bears migrated from the Pacific Northwest up to the Tundra and Arctic because they knew that they would have a better chance of surviving in this cold region.

hello please help i’ll give brainliest

Which statement is true about human population today?

A) Population is declining for the first time in history.

B) Population is rapidly declining in urban areas.

C) The time required to double the population is going down.

D) Human population is now about 5 billion.​