An example of this is the gene for coat color in rabbits (the C gene) which comes in four common alleles: C, cch, ch, and c. A classic example of an allele that affects surviva...An example of this is the gene for coat color in rabbits (the C gene) which comes in four common alleles: C, cch, ch, and c. A classic example of an allele that affects survival is the lethal yellow allele, a spontaneous mutation in mice that makes their coats yellow. Hydrangea of the same genetic variety may vary in color from blue to pink depending on the pH of the soil they are in.
