Are freckles a dominant or recessive trait?
Asked By Faraz Siddiqui
Replied by Admin
ANSWER: Freckles are a dominant trait. EXPLANATION : Freckles are most often seen on people with light-colored skin. It is the result of exposure to the ultraviolet light that comes from the sun. Melanin is produced when the sun rays hit the skin as a way of shading and protecting it. If a person produces melanin evenly, it is known as tanning. But if the person produces it in clumps then he/ she tend to have freckle. All those with freckles have inherited at least one pair of dominant gene for freckles. Those without freckles have inherited two recessive genes for freckles. Gene that causes freckles are called MC1R, does not work properly in some people. In those people whose MC1R gene fails on two levels, red hair and freckles are prominent traits. It is more common for the gene to fail on the level that causes freckles than it is to fail and produce both red hair and freckles.
- 26 Oct 2017 @ 07:26