A change in genetic material which produces a
variation in the species may be a result of

A. mutation
B. competition
C. overproduction of the species
D. a struggle for survival
Help???

A

Explanation:

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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b. read the phase at the intersection of any given temperature and pressure.