2. In sesame plants, the normal leaf (L) condition is dominant to the wrinkled leaf (l) condition. What is the genotype of the parents if the following offspring are produced?
-318 normal leaf plants and 98 wrinkled
-401 normal leaf plants.
3. Phenylketonuria (PKU) is an inherited
disease determined by a recessive allele. If a woman and her husband
are both carriers, what is the probability that all three of their children
will be normal? How did you determine this?
4. How many unique offspring can
be produced in a cross of one organism with the genotype AaBb and another
organism with the same genotype? What are the possible genotypes
and what is the possibility of each?
5. A black guinea pig is crossed
with an albino one. 12 offspring are produced, all black. When
the albino is again crossed, this time to a different mate, 7 black and
5 albino offspring are produced. What is the best explanation for
this genetic situation. Be sure to include the genotypes of all parents
and possible offspring.
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