Reproduction And Genetics Unit Test Question Preview (ID: 54424)


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Which of the following is an example of a homozygous genotype?
a) HH
b) Hh
c) hg
d) hH

Which of the following is an example of a heterozygous genotype?
a) PP
b) Pp
c) pp
d) pk

What organism did Gregor Mendel use for his investigations into genetics?
a) pea plants
b) humans
c) zebras
d) bean plants

In mice, brown fur is dominant to white fur and there is only one gene that affects fur color. Is it possible for two white mice to produce offspring that are brown?
a) No, none of the mice would be brown
b) Yes, about half would be white and half would be brown
c) Yes, but it would be rare (5% chance)
d) There is not enough information about the mice to tell for sure.

One cat carries heterozygous, long-haired traits, and its mate carries homozygous short-haired traits. What is the chance of their offspring having long hair? (Hint: Do a Punnett Square!)
a) 50%
b) 100%
c) 75%
d) 0%

In a certain species of plant, blue colored flowers are dominant to purple. What is the chance that a homozygous dominant plant and a homozygous recessive plant will produce blue-flowered offspring? (Hint: Do a Punnett Square!)
a) 100%
b) 50%
c) 25%
d) 0%

Which of the following represents a true-breeding/purebred genotype?
a) Rr
b) Tt
c) tt
d) R

In mice, brown fur is dominant to white fur. Is it possible for two brown mice to produce offspring that are white?
a) Yes, but only if the parents are both heterozygous
b) Yes, but only if the parents are both homozygous
c) No, the mice would always be brown
d) No, the mice would all be tan.

In pea plants, tall stems are dominant to short stems. If two hybrid tall plants produce offspring, what is the chance that their offspring will be homozygous recessive? (Hint: Do a Punnett Square!)
a) 25%
b) 50%
c) 100%
d) 0%

Which of the following would represent the genotypes of two parents if one of the parents is homozygous recessive and the other is homozygous dominant?
a) hh + HH
b) Hh + hh
c) HH + HH
d) Hh + Hh

Being able to roll your tongue into a U-shape is a dominant trait. A man can roll his tongue. His father however, could not roll his tongue. He married a woman who cannot roll her tongue. What are the chances that their child will be able to roll his
a) 100%
b) 50%
c) 25%
d) 0%

Which of the following is a possible genotype of a person with Type O blood?
a) oo
b) Ao
c) AB
d) Bo

Which of the following is a possible *phenotype* for human blood type?
a) Type A
b) Bo
c) oo
d) AB

How many different POSSIBLE alleles are there for human blood type (NOT including Rh factor)?
a) 3
b) 4
c) 2
d) 6

In snapdragons, red flowers are INCOMPLETELY dominant over white flowers. What chance do two PINK snapdragons have of producing a white snapdragon?
a) 25%
b) 0%
c) 100%
d) 50%

What type of inheritance results in a BLENDED coloring for the heterozygous offspring?
a) incomplete dominance
b) complete dominance
c) polygenic inheritance
d) codominance

What type of inheritance occurs when more than one allele is dominant?
a) codominance
b) incomplete dominance
c) complete dominance
d) polygenic inheritance

What type of cells DO NOT undergo mitosis?
a) sex cells
b) skin cells
c) liver cells
d) blood cells

Bacteria reproduce asexually by a process called _____.
a) binary fission
b) budding
c) fragmentation/regeneration
d) parthenogenesis

Which of the following is NOT an inherited trait?
a) a raccoon knows to look through trash for food.
b) birds migrate each year
c) eye color
d) tongue-rolling

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