Question

the genes on chromosome were represented as ABCDEFGH. After chromosomal breakage the order was found to be ABCEFGH. which type of change has occurred in chromosomal structure

Answer 1

There are 4 types of chromosomal mutations; Deletion, duplication, inversion and translocation. In this case it would be a deletion because gene D was no longer present after the chromosomal breakage.

Answer 2

Answer: Deletion.

Explanation:

We know that there are three major single-chromosome mutations:

• Deletion
• Duplication
• Inversion

Given: The genes on chromosome were represented as ABCDEFGH. After chromosomal breakage the order was found to be ABCEFGH.

We can see that after breakage gene D has been removed , therefore the change has occurred in chromosomal structure is a type of Deletion.