Suppose that you do not know whether a black male of problem

Suppose that you do not know whether a black male of problem 2 is homozygous or heterozygous. You could test his zygosity by mating him to a brown female. How many brown offspring would you need to observe to conclude that he is heterozygous? __________. How many consecutive black offspring would you need to observe before concluding with a probability of 99% that the male was homozygous BB? ___________.

Solution

Answer:

1). If 50% of progeny are brown and 50% are black, then the black parent may be concluded as heterozygous.

Ex.

Bb (heteroztgous, black) x bb (brown)---Parents

2). If all progeny are black, then the black parent is homozygous

Ex.

BB (Black) x bb (brow)---Parents

Bb (black)----F1

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