Question

Which does NOT contribute to genetic variation? *

A Chromosome number
B Crossing over
C Meiosis
D Random mating

Answer 1

Answer:

Option A is correct

A. Chromosome number

Have a good day

Answer 2

Answer:

A. Chromosome number

Explanation:

• Genetic Variation can be caused by Mutation, Random melting, Random fertilization and Homologous Chromosomes during meiosis. Here no role of Chromosome number in genetic variation.

• Chromosome number means, Which the gene can be found on the chromosomes. The first letter used to describe a genes location represents. The chromosomes no 1 to 22 autosome are designated by their chromosomes numbers. And other 23th is sex chromosome which decided to Male or female. it is not role in genetic variation.