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 separate, 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 b by explaining why groups begin to have their own genetic mutations c by showing how genetic mutations can benefit one group

Explanation:

Le paragraphe explique que les mutations génétiques sont des changements aléatoires dans l'ADN, et que plus un groupe vit longtemps et plus il est séparé d'un autre groupe, plus il accumule de mutations uniques. Cela explique pourquoi les groupes commencent à avoir leurs propres mutations génétiques.

Answer:

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