When they saw the robin-size songbird’s split coloring, it was immediately clear that the grosbeak was what scientists call a bilateral gynandromorph—an animal that appears half male and half ...

Chromosomes are tightly coiled structures in each of your cells that contain DNA, the code for all life. DNA is organized in segments on chromosomes called genes. Humans typically have 46 ...

Increased risk for autism appears to be linked to the Y chromosome, a Geisinger Health System study has found, offering a new explanation for the greater prevalence of autism in males. The results ...

The rare coloration is called bilateral gynandromorphism, Kratter said, and causes the animal to be male on one side of its body and female on the other. For the cardinal, the bright red side and ...

A green honeycreeper spotted on a farm in Colombia exhibits a rare biological phenomenon known as bilateral gynandromorphism ... birds have two different sex chromosomes, designated W and Z ...

This individual is only the second of the species ever recorded exhibiting this trait—called bilateral gynandromorphism ... while males have two Z chromosomes. Gynandromorphism could occur ...

Other bilateral gynandromorph birds have been seen in stable mating pairs, reproducing and behaviorally functioning as both males and females, the study said. These behaviors typically varied with ...

A bilateral gynandromorph is an animal that is born with one male half and one female half. The animal is usually divided down the middle with characteristics of two sexes in one body. Bilateral ...

Move over, Bowie – there’s a new bilateral gynandromorph in town. In a Colombian forest, zoologists have captured footage of an extremely rare and vividly colored half-green, half-female ...

"Many birdwatchers could go their whole lives and not see a bilateral gynandromorph in any species of bird. The phenomenon is extremely rare in birds, I know of no examples from New Zealand ever.

Jenny Graves receives funding from the Australian Research Council. The Y chromosome is a never-ending source of fascination (particularly to men) because it bears genes that determine maleness ...

The chromosome associated with male development, which is the last mysterious piece of the human genome, has been fully sequenced by a team of more than 100 researchers around the world, including ...