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- 1. Multiple Choice
A tall Zork named George met and fell in love with a tall Zork named Marge.
If Marge’s father is a heterozygous tall Zork and her mother is a short Zork, what is Marge’s genotype?
TT
Tt
tt
Not enough information to answer the question
- 2. Multiple Choice
Many farmers prefer cattle without horns because it is safer for their herds. The allele for no horns (N) is dominant to the allele for the presence of horns (n).
A farmer mates a male with horns to a heterozygous female without horns. What is the probability of offspring with horns?
0%
25%
50%
75%
100%
- 3. Multiple Choice
In horses, the allele for straight hair (H) is dominant, and the allele for curly hair (h) is recessive.
A horse breeder mates a homozygous dominant mother with a heterozygous male. What is the probability of an offspring with straight hair?
0%
25%
50%
75%
100%
- 4. Multiple Choice
In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a).
A mother with the genotype Aa and a father with the genotype Aa produce an offspring. What is the probability of an offspring with no belly fur?
0%
25%
50%
75%
100%
- 5. Multiple Choice
In seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes long whiskers & the recessive allele (w) codes for short whiskers. What percentage of offspring would be expected to have short whiskers from the cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous?
0%
25%
50%
75%
100%
- 6. Multiple Choice
In guinea pigs, black fur is dominant over white fur. What is the probability to the offspring will have white fur if two heterozygous parents are crossed?
0%
25%
50%
75%
100%
- 7. Multiple Choice
Zit and Zilla have the most beautiful set of purple lips on the planet. Zilla is believed to be heterozygous for her lip color. Zit's family brags that their blood line is pure. Which of the following correctly identifies Zit and Zilla's genotypes?
Zit - LL
Zilla - ll
Zit - Ll
Zilla - LL
Zit - LL
Zilla - Ll
Zit - ll
Zilla - Ll
- 8. Multiple Choice
Having three eyes is a recessive trait in the Zork population. Commander Shlob is famous for his three eyes. He recently married a good-looking female Zork who also has three eyes. In order to be a Zork commander, a Zork must have three eyes. Would it be possible for Commander Shlob and his new wife to have a Zork baby with only one eye?
It is possible for them to have a Zork baby with only one eye. The number of eyes a Zork has is an acquired trait and it does not depend on the parents' traits.
It is not possible for them to have a Zork baby with only one eye. There is a 100% chance of passing on the recessive trait since both parents are recessive.
It is possible for them to have a Zork baby with only one eye. If they are both heterozygous for their number of eyes, they have a 25% chance of having a Zork baby with the one-eyed trait.
It is not possible for them to have a Zork baby with only one eye. Both parents have the dominant trait, so the baby is guaranteed to have three eyes as well.
- 9. Multiple Choice
Zorks with two fangs make more money than Zorks with one fang. Ralph is heterozygous for one fang, but wants to have a Zork baby with two fangs. What type of female Zork would he need to marry in order to give him the BEST chance of having an offspring with two fangs?
Ralph should marry a female with the homozygous dominant genotype for number of fangs.
Ralph should marry a female with the heterozygous genotype for number of fangs.
Ralph should marry a female with the homozygous recessive genotype for number of fangs.
It is impossible for Ralph to have a Zork baby with two fangs.
- 10. Multiple Choice
Which of the following best describes what a Punnett square shows?
a table that describes the number of offspring produced from a genetic cross
a diagram that identifies where genes are located on chromosomes
a chart that lists the traits expressed by the outcomes of a genetic cross
a tool used to predict the possible outcomes of a genetic cross
- 11. Multiple Choice
SpongeBob’s aunt and uncle, SpongeWilma and SpongeWilbur, have the biggest round eyes
in the family. Wilma is believed to be heterozygous for her round eye shape, while Wilbur’s
family brags that they are a pure line. What is the probability that the kids would have round eyes?
0%
25%
50%
75%
100%
- 12. Multiple Choice
SpongeBob’s mother is so proud of her son and his new wife, SpongeSusie, as they are expecting a little sponge. She is hoping the new arrival will be blue (a recessive trait) like SpongeSusie and many members of her family. If SpongeBob is heterozygous for his yellow body color, what are the chances that the baby sponge will be blue?
0%
25%
50%
75%
100%
- 13. Multiple Choice
In Noombats, yellow bellies (Y) are dominant over green bellies (y). If a purebred yellow bellied noombat and a noombat that is a hybrid for belly color were bred, what is the probability that the parents will have a yellow bellied offspring?
0%
25%
50%
75%
100%
- 14. Multiple Choice
Kermit & Miss Piggy are both carriers for a rare genetic disorder called frog-o-pig-itis. Before they reproduce, they want to know what the odds their future children have of inheriting the disorder; so they see the doctor who does some genetic testing. What is the probability that Kermit and Miss Piggy have a child with frog-o-pig-itis?
0%
25%
50%
75%
100%
- 15. Multiple Choice
Cookie Monster has blue fur and his wife Oreo has purple fur. They attempt to predict the fur color of their future cookie offspring. Both of Cookie's parents are purple. Oreo's mother is purple and her father is blue. Determine the chances of their offspring having blue or purple fur.
0% blue
100% purple
25% blue
75% purple
50% blue
50% purple
75% blue
25% purple
100% blue
0% purple
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