Questions: Select a daughter DNA strand from the following original strand. 5' CCATGCATTGGTTAG 3' 3'-GGTACGTAACCAATC-5' 3'-GGTAGGTAAGCAATC-5' 3'-GGTUCGTUUCCUUTC-5' 3'-GGUACGUAACCAAUC-5'

Select a daughter DNA strand from the following original strand.
5' CCATGCATTGGTTAG 3'
3'-GGTACGTAACCAATC-5'
3'-GGTAGGTAAGCAATC-5'
3'-GGTUCGTUUCCUUTC-5'
3'-GGUACGUAACCAAUC-5'

Transcript text: Select a daughter DNA strand from the following original strand. \[ 5^{5} \text { CCATGCATTGGTTAG }{ }^{3} \] 3'-GGTACGTAACCAATC-5' 3'-GGTAGGTAAGCAATC-5' 3'-GGTUCGTUUCCUUTC-5' 3'-GGUACGUAACCAAUC-5'

Solution

The answer is the first one: 3'-GGTACGTAACCAATC-5'

Explanation for each option:

3'-GGTACGTAACCAATC-5': This is the correct complementary strand. DNA strands are complementary and antiparallel. The original strand is 5'-CCATGCATTGGTTAG-3', so the complementary strand should be 3'-GGTACGTAACCAATC-5'.
3'-GGTAGGTAAGCAATC-5': This sequence does not correctly complement the original strand. It has mismatched bases.
3'-GGTUCGTUUCCUUTC-5': This sequence contains uracil (U), which is found in RNA, not DNA. Therefore, it is incorrect.
3'-GGUACGUAACCAAUC-5': This sequence also contains uracil (U) instead of thymine (T), making it incorrect for a DNA strand.

Summary: The correct daughter DNA strand complementary to the original strand 5'-CCATGCATTGGTTAG-3' is 3'-GGTACGTAACCAATC-5'.

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