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Quiz108 - General Genetics Page 1 of 4 General Genetics...

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General Genetics 3100:211 Fall, 2008 Quiz 1 ID___________________ Form A 1. There are 36 chromosomes in the somatic cells of an unknown rodent. How many chromosomes did this rodent receive from its father? 18 2. A certain plant has 8 chromosomes, one large metacentric pair, a small acrocentric pair and 2 telocentric pairs, one large and one small. If this plant were to self fertilize, what proportion of the offspring would have all telocentric chromosomes? none 3. A black female guinea pig is testcrossed and produces one white offspring. What is the genotype of the female? Which trait is dominant? Heterozygous, black 4. Two normal parents have an albino child. What is the chance their next child will be an albino? 1/4 5. Short hair in rabbits is governed by a dominant allele H and long hair by the recessive allele h. Black hair results from a dominant genotype B- and brown from the recessive homozygote bb. In crosses between heterozygous short hair, black and homozygous short haired brown rabbits, what proportion of the offspring will be long haired black? none 6. Using the following cross in pea plants determine the genotype of the parents. Yellow (A) and tall (B) are dominant, green (a) and dwarf (b) are recessive. Give genotype in the order listed, first parent is first genotype etc.
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