Part 1 - Mendelian Genetics Review
Match the example with the type of inheritance.
A) Complete dominance B) Incomplete dominance C) Codominance
_______Pea shape in garden pea plants: The W gene encodes for anenzyme that synthesizes starch granules in peas. The w gene encodesfor a dysfunctional enzyme that will not synthesize the starchgranules. The presence of starch granules makes the seeds round,and the absence of the starch granules results in wrinkled seeds.Heterozygotes have only half as many starch granules, yet that isenough to make the seeds round.
_______Piebald (white) spotting in cats: Cats homozygous for thes allele do not have any white spots. Cats with the S allele arecompletely white. Cats that are heterozygous (Ss) are about 50%white.
________ Sickle-cell anemia in humans: Heterozygotes have onecopy of the wild-type hemoglobin and one copy of the mutanthemoglobin. Phenotypically, heterozygotes have about half thenumber of sickled red blood cells as
homozygotes do.
