Populations live in rapidly changing environments – droughts come and go, food sources change, human activities reshape habitats. For scientists, this raises a fundamental puzzle: How do populations ...

1. Dominant and recessive whites in the Mendelian sense, have no relation to the presence of Speigler's "white melanin." 2. The "white melanin" was found to be present in all forms of keratin ...

Genes come in pairs – ­one coming from your ­father and one from your mother – and can be ­described as being either dominant or recessive. A dominant gene is said to be “strong” and will always have ...