AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a portion of a gene, the sequence is T-C-G-A-A-T. What is the complimentary DNA sequence?
A
A-C-G-T-A-A
B
A-C-G-U-U-A
C
A-G-C-T-T-A
D
U-G-C-A-A-U
Explanation: 

Detailed explanation-1: -Complementary Sequence: Since DNA has two strands, every DNA sequence has a complementary sequence running parallel. In the complementary sequence, Adenine (A) is always paired with Thymine (T), and Cytosine (C) is always paired with Guanine (G).

Detailed explanation-2: -noun Biochemistry. either of the two chains that make up a double helix of DNA, with corresponding positions on the two chains being composed of a pair of complementary bases. a section of one nucleic acid chain that is bonded to another by a sequence of base pairs.

Detailed explanation-3: -Solution : (c) Adenine always pairs with thymine and cytosine always pairs with guanine. Thus, sequence of bases on complementary strand would be TACGTACGT.

Detailed explanation-4: -A strand of DNA with the sequence AACTTG will have a complimentary strand with the sequence. Explanation: There are four nitrogenous bases. They help in relation of one of the strand of the DNA with the others strand.

There is 1 question to complete.