Question

Inheritance patterns cannot always be explained by Mendel's models of inheritance. If a pair of homologous chromosomes fails to separate during meiosis I , select the choice that shows the chromosome number of the four resulting gametes with respect to the normal haploid number (n)? (A) n+1 ; n+1 ; n-1 ; n-1 (B) n+1 ; n-1 ; n ; n (C) n+1 ; n-1 ; n-1 ; n-1 (D) n+1 ; n+1 ; n ; n

Answer 1

The chromosome number of the four resulting gametes with respect to the normal haploid number shows n + 1; n + 1; n - 1; n - 1 (option A).

During aligning of all the homologous chromosomes, in the process of meiosis, new cells are formed.

From the total number of chromosomes one chromosome is missing , the resulting chromosomes are +1 and -1. Similarly for the second cell, resulting chromosomes would be +1 and -1.

This makes four gametes i.e. -1 and -1 and +1 and +1 respectively.

To learn more about patterns observed when chromosomes fail to separate, here

brainly.com/question/9326775

#SPJ4