Question

If a strand of DNA of sequence 5'-GGTGACACAATGTTC-3' is replicated, which of the following accurately represents the newly synthesized DNA strand? a. 5' - CCACTGTGTTACAAG - 3' b. 5' - TTATCGCGCCA...
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Answer 1

Answer:

In DNA, Adenine (A) pairs with Thymine (T) and Guanine (G) pairs with Cytosine (C).

Hence, on replication of DNA in M phase, complementary nucleotides for each base pair will be added as follows:

A - T

T - A

G - C

C - G

Since replication occurs in 5'-3' direction, so the complementary strand will be formed in 3'-5' direction.

Hence the sequence of complementary strand formed upon replication will be: 3'-TGACGGATACGA-5'

So, the correct answer is 3'-TGACGGATACGA-5'.

Answer 2

If a strand of DNA of sequence 5'-GGTGACACAATGTTC-3' is replicated, which of the following accurately represents the newly synthesized DNA strand?

a. 5' - CCACTGTGTTACAAG - 3'

b. 5' - TTATCGCGCCATAAG - 3'

c, 3' - CCACTGTGTTACAAG - 5'

d. 3' - TTATCGCGCCATAAG - 5'

DNA Replication:

DNA replication is used to copy a cell's genome before it divides. This process is semiconservative, meaning that each new DNA molecule contains one strand from the original molecule and one newly synthesized strand.

More explanation

The correct answer is (c) 3' - CCACTGTGTTACAAG - 5'. DNA replication synthesizes a new strand of DNA that is complementary to a strand of the original