Name: __________________
Date: ___________________
Hour: ___________________
QUIZ 2:
Genotype and Phenotype
Topic 3033
Anna Blight
1.
(True/False) The alleles for coat color are located on the chromosomes.
2.
(T/F) Each pair of genes carries several pairs of chromosomes.
3.
(T/F) Only turkeys have less pairs of chromosomes than humans.
4.
Genetic information is transmitted in what fashion?
A: DNA to RNA to proteins
B: proteins to DNA to RNA
C: RNA to DNA to proteins
D: DNA to RNA to genes
5.
If the genotype of a steer is AA, he is:
A: heterozygous
B: homozygous recessive
C. C. homozygous dominant
D. D. heterozygous dominant
6. A hog is Ss for spots and is crossed with another Ss sow. What is the probability that
offspring will be heterozygous? Show your work in a punnett square provided on
page 3.
A: 25%
B: 75%
C: 50%
D: 50:50
7.
What is the phenotypic ratio for the above mating?
A: 3:1
B: 1:2:1
C: 50:50
D: 2:1
8. A lamb has black wool and has parents that are white. If W=white and w=black, what
is the genotype of the parents?
A:
B:
C:
D:
WW & ww
Ww & Ww
50:50
75:25
9. If these two parents mate again, what are the chances they would produce another
black lamb?
A: 0
B: 25%
C: 50 %
D: 75%
10.
You have decided to mate a heterozygous ram with a homozygous recessive ewe.
If W=white and w=black, what genotype are the lambs? Show the punnett square in
the space provided on page 3.
A: 100% heterozygous
B: 50% homozygous recessive & 50% heterozygous
C: 50 % white & 50% black
D: 50% heterozygous recessive & 50% homozygous
Bonus point: If you mate one of the black lambs from the above mating with another
heterozygous ram, what will be the phenotypic ratio of the next generation? Show the
punnet square.
Bonus Punnett Square
6. Punnett Square
10. Punnett Square