And remember, NEVER put petroleum-or mineral oil-based products on a sunburn. Because they form a seal, they'll lock in the heat into your skin, making the burn worse, not better. It could even lead to permanent scarring. Petroleum-based products form a seal on your skin...
Homozygous (or Purebred) - The genotype for the characteristic has the same genes/alleles (e.g. BB, bb). Heterozygous (or Hybrid) - The genotype for the characteristic has different genes/alleles (e.g. Bb). Wild-type - The most common phenotypes in a population are called the wild-type.
Blood Type Genetic Basis: In genetics, blood type gene has two alleles, each allele has genotype A, B or O. The A and B are dominant, and O is recessive. So allele A combined with allele O is type A. Similarly, BO is type B, AA is type A, BB is type B, OO is type O, and AB is type AB. If both parents have type A blood, then the alleles could be AA or AO, thus the allele A frequency is 75%, allele O frequency is 25% for both parents. alleles OA is 25% Ã 75% = 18.75%.