Glencoe Biology

Section 2: Complex Patterns of Inheritance

Self-Check Quizzes

1.
An interaction in which one allele hides the effect of another allele is called ____.
A)epistasis
B)nondisjunction
C)dosage compensation
D)sex determination
2.
Traits such as skin color and height which result from multiple genes are called ____.
A)alleles
B)polygenic traits
C)pedigrees
D)inactive chromosomes
3.
This Punnett square shows incomplete dominance in snap dragons. What do the Rr alleles represent?

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A)an example of codominance
B)homozygous intermediate traits
C)heterozygous intermediate traits
D)homozygous recessive traits
4.
Which statement is true regarding sex chromosomes?
A)Males have dosage compensation.
B)Females have an X and Y chromosomes.
C)Males have two X chromosomes.
D)Females have dosage compensation.
5.
Which of these is not an example of the environment influencing phenotype?
A)chemicals causing gene mutation
B)dry plant losing leaves
C)dog's thicker fur in cold weather
D)lack of sun causing flowers to die
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