red-yellow

In most mammals, including humans, red hair is caused by mutations in one cell surface protein, Mc1r, that determines whether skin cells called melanocytes produce a dark pigment or a lighter red-yellow pigment in skin or hair.

The rain picked up piles of debris, washed out roads and turned the usually pastel red-yellow landscape of the area in central Australia into a rich tapestry of brown-green.

The bees are busy all day long in the red-yellow flowers of the cucumbers and the cream-yellow flowers of the squash.

But as phrases like ENFP, INTJ, red-yellow and blue-white continue to seep into corporate lingo, the enthusiasm is difficult to quash.

On his first day working at the University of Phoenix, Eric Shapiro found out the good news: He had tested red-yellow.