Question

Write the base sequence of the complementary strand of double-helical DNA in which one strand has the sequence (5)ATGCGTAGCCTAGCCTAGTAGCCTTC(3). What is RNA sequence copied from this sequence?

Answer 1

Answer:

Explanation:

In the DNA, the nitrogen bases, Adenine A (a purine) forms double bond with Thymine T (a pyrimidine) but in RNA, the bond is with Uracil U (a pyrimidine) instead of Thymine; Guanine G (a purine) forms triple bond with Cytosine C (a pyrimidine): this also occur in RNA. This we have:

DNA sequence: 5' ATGCGTAGCCTAGCCTAGTAGCCTTC 3'

Complimentary strand : 3' TACGCATCGGATCGGATCATCGGAAG 5'

The RNA sequence is produced running from the 5' to the 3' direction thus, the complimentary strange will be used.

5'AUGCGUAGCCUAGCCUAGUAGCCUUC 3'