Heredity Worksheet With Answers
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11Multiple Choice Review - Heredity
Questions #1-3 refer to the following situation:
In humans, detached earlobes (D) is dominant to attached earlobes (d). Alison and her father have
attached earlobes. Her mother has detached earlobes.
1. What is Alison’s phenotype?
a. Recessive
b. dd
c. Attached earlobes
d. Homozygous
2. What is the father’s genotype?
a. Recessive
b. dd
c. Attached earlobes
d. Homozygous
3. What is a correct description of the mother, in terms of the earlobe gene?
a. She is heterozygous for the gene.
b. She expresses incomplete dominance for the gene.
c. She only has one allele for the gene.
d. It is an unlinked gene.
4. On chromosome 1 of fruit flies, the gene for yellow body is 27.5 map units away from the gene
for tan body, 43 map units away from the gene for sable body, and 56.7 map units away from
the gene for forked bristles. Which two genes have the highest recombination frequency?
a. Sable body and forked bristles
b. Yellow body and forked bristles
c. Yellow body and tan body
d. Tan body and sable body
5. Every organism has two alleles for each gene. During meiosis, however, these two alleles
separate from each other into different gametes. What did Mendel call this phenomenon?
a. Law of independent assortment
b. Law of separation
c. Law of causation
d. Law of segregation
6. A new flower species is discovered in the rainforest. Back in the lab, a scientist crosses a red
variety with a blue variety. The result includes some red flowers, some blue flowers, and some
purple flowers. What type of dominance pattern do these plants display?
a. Complete dominance
b. Incomplete dominance
c. Epistasis
d. Codominance
AP Biology
Heredity
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