The black color of the fur (A) in minks dominates over the blue color (a). Which individual should they be crossed with in order to prove the purebredity of the black minks acquired by the fur farm. Determine the genotype of the offspring if the minks are purebred. Indicate the genotype of the purebred mink; mink, which was taken for crossing; offspring genotype
1. Black color can be in both heterozygous and homozygous individuals. But purebred individuals are homozygous and do not split in offspring.
2. To find out the genotypes of the purchased minks, you need to cross them with blue minks (aa) – analyzing crossing.
3. If the mink was purebred, i.e. there is no splitting – then all offspring will be black heterozygous (Aa).
Answer: purebred – AA, for crossing – aa, offspring – Aa.
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