2. In dogs, there is an hereditary deafness caused by a recessive gene, "d." A kennel
owner has a male dog that she wants to use for breeding purposes if possible. The dog
can hear, so the owner knows his genotype is either DD or Dd. If the dog's genotype is
Dd, the owner does not wish to use him for breeding so that the deafness gene will not
be passed on. This can be tested by breeding the dog to a deaf female (dd). Draw the
Punnett squares to illustrate these two possible crosses. In each case, what
percentage/how many of the offspring would be expected to be hearing? deaf? How
could you tell the genotype of this male dog? Also, using Punnett square(s), show how
two hearing dogs could produce deaf offspring.