Unit 7 Target 3: Alleles Quiz

8 Questions | By Jdowdyrobinson | Updated: Mar 21, 2022 | Attempts: 507

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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