Question

A small stretch of DNA strand that codes for a polypeptide is shown below:
3'--- --- --- --- CAT CAT AGA TGA AAC--- --- --- --- 5'
a.) Which type of mutation could have occurred in each type resulting in the
following mistakes during replication of the above original sequence?
i. 3`... ... ... ...CAT CAT AGA TGA ATC... ... ...5`
ii. 3`... ... ... ...CAT ATA GAT GAA AC... ... ... 5`
b.) How many amino acids will be translated from each of the above strands i) and ii)?

Answer 1

Answer:

Explanation:

a) point mutation

b) 1. 4aminoacids

2. 4 aminoacids

Answer 2

Point Mutation and amino acids are occcurred in each type.

Explanation:

• A) I : Point mutation of single base substitution type will be occured in a DNA strand by which the base pairs will substitute their position from s' end of the DNA strand.

• A) II :  Point mutation of single base deletion of base pairs from the one to other end of the DNA strand in which one base pair is delete and new one is add on the 5' end of DNA strand.
• B) 1 : 4 Aminoacids are translated in 1 DNA strand on the side of 5' end of polypeptide chain  by the ATC group of polypeptide.
• B) 2 : 4 Aminoacids are translated in 2 DNA strand on the 5' end of polypeptide chain by the AC group of base pairs only.