Question

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_