It also adds that “men are solely responsible for determining a child’s biological sex” due to the presence - or not - of the ...

Color blindness in females is much less common than in males. Specific genetic mutations can cause it, and these mutations vary depending on the chromosomes present. Learn more.

Color blindness, or color vision deficiency, is more common in males. This is due to how parents pass down a chromosome associated with the male sex.

Garfield might be the most iconic orange tabby around, but Hollywood has seen quite a few leading cats of the same color—Heathcliff, Oliver, Hiyao Miyazaki’s adorably terrifying Catbus from My ...

Still, he suspects the ginger cat stereotype is more about gender than genetics – most orange cats are male. “There are not many scientific studies of the personality of orange cats,” he noted.

Male kittens, also like most other male mammals, have one X chromosome and one Y chromosome. Male cats with orange-colored parents only get one copy of the orange mutation and thus end up with ...

Genetics add another layer to the process, determining how much melanin an individual’s iris will produce. But, unlike simple inheritance patterns, eye color isn’t determined by a single gene.

The Y chromosome has seen significant changes over the course of human evolution. "In comparison to the X, the Y is tiny. There are only 45 genes on the Y chromosome, ...