AP BIOLOGY

HEREDITY

SEX LINKAGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If one strand of DNA had the sequence ATCCGGTAC, what is the sequence on the other strand
A
UAGGCCAUG
B
I don’t know
C
TAGGCCATG
D
CATGGCCTA
Explanation: 

Detailed explanation-1: -The base pairs on one strand of the DNA bind with the base pairs of the other strand specifically. A always pairs with T with two hydrogen bonds and G always pairs with C with three hydrogen bonds. So if one strand is ATGCTTGA then the complementary strand will be TACGAACT.

Detailed explanation-2: -The complementary DNA strand of the sequence ATGC will be TACG.

Detailed explanation-3: -A DNA strand is complementary. This means adenine pairs with thymine and cytosine pairs with guanine in the opposite strand. The given strand has a sequence 5’-GAATTG-3’. Hence the complementary strand will have a sequence 5’-CAATTC-3’.

Detailed explanation-4: -Complementary sequence: Nucleic acid sequence of bases that can form a double-stranded structure by matching base pairs. For example, the complementary sequence to C-A-T-G (where each letter stands for one of the bases in DNA) is G-T-A-C.

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