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BIO 181 QUIZ 5 Questions and Correct
Answers/ Latest Update / Already Graded
Recombination between linked genes comes about for what reason?
Ans: Crossovers between these genes result in chromosomal
exchange.
The following question refers to the pedigree chart in Figure 14.2
above for a family, some of whose members exhibit the dominant trait,
W. Affected individuals are indicated by a dark square or circle.
What is the genotype of individual II-5?
Ans: ww
When crossing an organism that is homozygous recessive for a single
trait with a heterozygote, what is the chance of producing an offspring
with the homozygous recessive phenotype?
Ans: 50%
Two plants are crossed, resulting in offspring with a 3:1 ratio for a
particular trait. What does this suggest?
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Ans: That the parents were both heterozygous for a single
trait.
The pedigree in Figure 15.3 shows the transmission of a trait in a
particular family.
Based on this pattern of transmission, the trait is most likely:
Ans: Mitochondrial
Which of the following is an example of polygenic inheritance?
Ans: Skin pigmentation in humans
Which of the following is the meaning of the chromosome theory of
inheritance as expressed in the early 20th century?
Ans: Mendelian genes are at specific loci on the chromosome
and in turn segregate during meiosis.
Red-green color blindness is a sex-linked recessive trait in humans.
Two people with normal color vision have a color-blind son. What are
the genotypes of the parents?
Ans: XRXr and XRY
All rights reserved © 2025/ 2026 |
BIO 181 QUIZ 5 Questions and Correct
Answers/ Latest Update / Already Graded
Recombination between linked genes comes about for what reason?
Ans: Crossovers between these genes result in chromosomal
exchange.
The following question refers to the pedigree chart in Figure 14.2
above for a family, some of whose members exhibit the dominant trait,
W. Affected individuals are indicated by a dark square or circle.
What is the genotype of individual II-5?
Ans: ww
When crossing an organism that is homozygous recessive for a single
trait with a heterozygote, what is the chance of producing an offspring
with the homozygous recessive phenotype?
Ans: 50%
Two plants are crossed, resulting in offspring with a 3:1 ratio for a
particular trait. What does this suggest?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: That the parents were both heterozygous for a single
trait.
The pedigree in Figure 15.3 shows the transmission of a trait in a
particular family.
Based on this pattern of transmission, the trait is most likely:
Ans: Mitochondrial
Which of the following is an example of polygenic inheritance?
Ans: Skin pigmentation in humans
Which of the following is the meaning of the chromosome theory of
inheritance as expressed in the early 20th century?
Ans: Mendelian genes are at specific loci on the chromosome
and in turn segregate during meiosis.
Red-green color blindness is a sex-linked recessive trait in humans.
Two people with normal color vision have a color-blind son. What are
the genotypes of the parents?
Ans: XRXr and XRY
All rights reserved © 2025/ 2026 |
