Unit 7 Target 3: Alleles Quiz
- 1.In humans, pigmented skin is dominant to non-pigmented skin (albinism). What is the genotype of an individual with albinism?
- A.
Carrier
- B.
Heterozygous
- C.
Homozygous dominant
- D.
Homozygous recessive
- 2.The principle of dominance states that
- A.
All alleles are dominant.
- B.
All alleles are recessive.
- C.
Some alleles are dominant and others are recessive.
- D.
Alleles are neither dominant nor recessive.
- 3.Organisms that have two identical alleles for a particular trait are said to be
- A.
Hybrid.
- B.
Homozygous.
- C.
Heterozygous.
- D.
Dominant.
- 4.If a pea plant has a recessive allele for green peas, it will produce
- A.
Green peas if it also has a dominant allele for yellow peas.
- B.
Both green peas and yellow peas.
- C.
Green peas if it does not also have a dominant allele for yellow peas.
- D.
Yellow peas if it does not also have a dominant allele for green peas.
- 5.Genotype is the
- A.
Physical appearance of the trait.
- B.
Genetic make-up of the trait.
- C.
None of the answer choices.
- D.
Both of the answer choices.
- 6.Phenotype is the
- A.
Physical appearance of the trait.
- B.
Genetic make-up of the trait.
- C.
None of the answer choices.
- D.
Both of the answer choices.
- 7.If a tall plant (T) is dominant to a short plant (t), what would the genotype be for tall plants?
- A.
TT
- B.
Tt
- C.
Tt
- D.
TT and Tt
- E.
TT, Tt, and tt
- 8.If a tall plant (T) is dominant to a short plant (t), what would the plant's phenotype be if it was Tt?
- A.
Tall height
- B.
Medium height
- C.
Short height
- D.
Tall and short height
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