1. In humans, blood types A and B are codominant to each otherand each is dominant to O. What blood types are possible among theoffspring of a couple of blood types AB and A?
Select one:
a. A and B only
b. A, B, and O only
c. A and AB only
d. A, B, AB, and O
e. A, B, and AB only
2. You are studying body color in an African spider and havefound that it is controlled by a single gene with four alleles: B(brown), br (red), bg (green), and by (yellow). B is dominant toall the other alleles, and by is recessive to all the otheralleles. The bg allele is dominant to by but recessive to br. Youcross a pure-breeding brown spider with a pure-breeding greenspider. Predict the genotype of the progeny.
Select one:
a. B/by
b. Br/bg
c. br/by
d. B/bg
e. by/bg
3. A mother of blood type A gives birth to a child with bloodtype O. Which of the following could NOT be the blood type of thefather? Select one:
a. A
b. Any type is a possible blood type of the father
c. AB
d. B
e. O
4. Crossing two yellow mice results in 2/3 yellow offspring and1/3 nonyellow offspring. What percentage of offspring would youexpect to be nonyellow if you crossed two nonyellow mice? Selectone:
a. 100%
b. 33%
c. 75%
d. 25%
e. 66%
5. Coat color is determined by two loci in large cats. Two pinkpanthers fall in love and produce a large litter of baby pantherswith the following phenotypic ratios: 12/16 pink; 3/16 black; and1/16 whitE. What is the genotype of the pink progeny?
Select one:
a. A_ bb
b. aa bb
c. aa B_
d. A_ B_ and A_ bb
e. A_ B_