Answer:
a trait is a characteristic, such as color or size, that is inherited by an offspring from its parents. The genes that control a trait come in pairs, one gene from each parent. If a gene pair contains a dominant allele, then the offspring will show this dominant trait.
step by step:
Books.. GOogle..Bing.... oh Wait BRAINLY
Answer:
Explanation:
So that it can be better for the person
If the environment changes quickly and no individual members of a species are able to survive in the new environment, then the species will become extinct in that environment