Quaggas once lived in south africa. they are now extinct. people hunted them for their hides and meat. quaggas fed on grass, which people also used to feed their sheep and goats.

based on these facts, what is the least likely reason the quaggas became extinct?
a) temperatures changed.
b) they had no food to eat.
c) they had no space to live.
d) people hunted them too much.

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.