The blue-eyed man is married to a brown-eyed woman whose parents were also brown-eyed, but whose sister is blue-eyed.

The blue-eyed man is married to a brown-eyed woman whose parents were also brown-eyed, but whose sister is blue-eyed. Can they have a blue-eyed baby? What is the law in this situation? Name and state it.

Most likely, the mother will have the AA genotype, and then such parents cannot have a blue-eyed child, since the law of uniformity of the first generation hybrids (1 Mendel’s law) will operate.

Of course, the second variant is also possible: the mother has the Aa genotype, and in this case the appearance of a blue-eyed child is possible, but there is no law of heredity for such a case (unless it is possible to write that the result will be as in the analyzing crossing).