Q1 in dogs black b is dominant to chestnuts b and solid, Ask an Expert

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Q1. In dogs, black (B) is dominant to chestnuts (b), and solid colour (S) is dominant to spotted (s). What are the genotypes of the of the parents that would produce a cross with 3/8 black solid, 3/8 black spotted, 1/8 chestnut solid, and 1/8 chestnut spotted puppies?

Q2. A couple has 4 children. Neither the father nor the mother is bald; one of the two sons is bald, but neither of the daughters is bald. If one of the daughters marries a non bald man and they have a son, what is the possibility that the son will become bald as an adult?

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