Aspecies is a group of organisms capable of mating and producing offspring, and speciation is the process of forming a new species.

one way a new species may form is by geographic isolation. this occurs when members of a population are physically separated, for example, by a river, or a desert.

after the separation the two populations, responding to different conditions, will adapt differently, and so their evolutionary paths will

the answer is c

Explanation:

diverge

i just took the usa test prep test

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.