What is the basics of genetic engineering?

Genetic engineering is accomplished in three basic steps. These are (1.) The isolation of DNA fragments from a donor organism; (2.) The insertion of an isolated donor DNA fragment into a vector genome and (3.) The growth of a recombinant vector in an appropriate host.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

a and c are the answeres