2 Matching Annotations
- Nov 2021
-
www.theatlantic.com www.theatlantic.com
-
After 30 Years of Breeding Condors, a Secret Comes Out ‘Virgin birth’ might be more common in animals than we thought. by Sarah Zhang https://www.theatlantic.com/science/archive/2021/10/california-condors-are-capable-virgin-birth/620517/
-
- Oct 2021
-
www.theatlantic.com www.theatlantic.com
-
Because of birds’ chromosome system—ZZ makes males and ZW makes females—all avian parthenotes are males. If an egg with a W chromosome merges with its polar body, the resulting WW embryo will not be viable. Only the ZZ parthenotes ever hatch.
-