At that locus, each wolf has two copies of a color gene, of which there are two possible alleles: gray or black, the latter being dominant. The 2018 study, conducted on wolves from four North American ...

Wolf spiders are large, hairy spiders that are typically brown, gray, or black in color. They have prominent eyes that shine ...

The gray wolf, also known as the timber wolf or the ... although nearly pure white, red, or brown to black also occur.