Answer to Question #277118 in Genetics for zakh

Question

evaluate the significant of chromosomal behaviour during cell division and how it leads to variation provide justified arguments as to how crossing over and independent assortment leading to the variation within an organism

Answer 1

A population with many different alleles at a single chromosome locus has a high amount of genetic variation. Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population.