-------------- is a heritable change in the structure and composition of genes or in the number of chromosomes.
Mutation:
Final answer: Mutation is a heritable change in the structure and composition of genes or in the number of chromosomes.
A gene is a :
(a) hybrid (b) heritable trait
(c) pure breed (d) part of a chromosome that transmits a trait
Name the following:
A sudden heritable change in the gene.