They just need to carry the recessivemutation. So it's not uncommon for white bears to be born to black parents.
黑熊父母的皮毛不必是白色的,他们只需携带隐性突变基因即可,因此黑熊父母生出小白熊并非特别的难事。
2
At 14, Calliope Stephanides discovers she has a rare recessivemutation that renders her a pseudo-hermaphrodite.
14岁的卡莉欧碧·斯迪芬奈兹患上了罕见的基因隐性突变,使她成为了一名阴阳人。
3
The phenomenon, known as Kermodism, is triggered by a recessivemutation at the MC1R gene, the same gene associated with red hair and fair skin in humans.