AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A DNA strand has the following bases:A A G C C A. What are the bases on its complementary strand?
A
A A G C C A
B
A C C G A A
C
T T C G G T
D
C C A T T C
Explanation: 

Detailed explanation-1: -The complementary strand of DNA is the base pair that is created complementarity to the given DNA sequence. The base pairs are adenine and thymine which forms a double bond and guanine and cytosine which forms a triple bond. The complementary strand for the given sequence is TTCGGT.

Detailed explanation-2: -Answer and Explanation: If the template strand of DNA contains the nucleotide base sequence ATGCCA, the nucleotide sequence of the transcribed mRNA strand would be: (c) UACGGU. This answer is correct because each base in the mRNA strand is complementary to the corresponding base in the DNA strand.

Detailed explanation-3: -In DNA, the complementary bases are adenine and guanine; thymine and cytosine. Each nucleotide in DNA is composed of a nitrogen containing base, either guanine (G), adenine (A), thymine (T), or cytosine (C) as well as a monosaccharide sugar called deoxyribose and a phosphate group.

There is 1 question to complete.