Question

This is a General genetics assignments.

Detailed Explainations would be approciated.  

#1. If cytosine makes up 23% of the bases in a protist’s genome, what are the percentages of the other three nucleotides?

#2.A portion of a polypeptide contains the amino acids N-Trp-Lys-Met-Ala-Val-C. Write the possible mRNA and template strand DNA sequences that would code for this sequence of amino acids. Use A/G and T/C to indicate that either adenine or guanine or thymine or cytosine could occur in a particular position and use N to indicate that any DNA nucleotide could appear.

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#3. Consider the following segment of DNA:

5’-. . . ATGCCAGTCACTGACTTG . . .-3’
3’-. . . TACGGTCAGTGACTGAAC . . .-5’

A. How many phosphodiester bonds are required to form this segment of DNA?

B. How many hydrogen bonds are present in this DNA segment?

C.If the lower strand of DNA served as the template strand for transcription, how many peptide bonds would be present in the resulting piece of polypeptide that would be produced?

Answer 1