BSC 2010C Lecture 15: Chapter 15- The Chromosomal Basis of Inheritance
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1. In hamsters, B is a dominant allele coding for black fur and w is a recessive allele coding for white fur. Match up the appropriate probabilities of mating outcomes with the parental genotypes.
Probabilities | Matching Outcomes |
All offspring are black | A. ww x ww |
All Offspring are white | B. Bw x ww |
There is a 50% chance offspring are either black or white | C. BB x ww |
The chance of a white offspring is 25% | D. Bw x Bw |
2. The following question deals with the ABO blood group. Recall that A and B alleles are co-dominant over the allele O. Jill, who has type AB blood, marries Jack who has type B blood, but whose mother has type O blood. What are the genotypes of Jack, Jill, and Jack's mother?
A. Jack: B
Jill: AB
Jack's Mother: O
B. Jack: BB
Jill: AB
Jack's Mother: OB
C. Jack: BBO
Jill: ABO
Jack's Mother: OOO
D. Jack: BO
Jill: AB
Jack's Mother: OO
E. Jack: BB
Jill: AB
Jack's Mother: OO