A polygenic trait is controlled by A. two or more genes.
B. one gene that has only two alleles.
C. one gene with only one allele.
D. two alleles on two genes​

A. two or more genes because most genetic characteristics or traits are controlled by many genes.

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.