13 Based on the narrative above, Victor's doctors said his condition was caused by a
mutation. The specific type of mutation that was discovered during the biopsy is
called a
A chromosomal deletion and insertion mutation
B point mutation
C frameshift mutation
D cancerous mutation

it is 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).

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".