Question

genetic changes are the result of random mutations. tiny permanent tweaks or changes in the dna are known as mutations. the longer a group lives, handing down its genes through generations, the more tweaks build up in genes. the longer two groups are separated, the more unique tweaks they will acquire.

how does this paragraph support the main idea of the article?

a. by explaining the huge problems created by genetic mutations

by explaining why groups begin to have their own genetic mutations

Explanation:

Le paragraphe explique comment les mutations aléatoires dans l'ADN entraînent des changements génétiques. Plus un groupe existe et est séparé, plus il accumule de traits uniques grâce aux mutations qui se propagent à travers les générations. Cela explique pourquoi les groupes ont des mutations génétiques distinctes.

Answer:

B. by explaining why groups begin to have their own genetic mutations