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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

A key part of the WatsonCrick model came when Watson realized that adenine could form hydrogen bonds with thymine and guanine could form hydrogen bonds with cyt class=

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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

  1. A - T
  2. T - A
  3. T - A
  4. C - G
  5. A - T
  6. G - C
  7. G-C
  8. C - G
  9. T - A
  10. A - T

  1. A usually pairs up with T
  2. C usually pairs up with G
  3. These are bases of amino acids called nucleotides sequences. And this helps in the bond of several base pairs to their nucleotide sequence.

What is the Watson-Crick model?

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

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