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Reproduction And Genetics Unit Test
Test Description: Study for the test!
Instructions: Answer all questions to get your test result.
1) Which of the following is an example of a homozygous genotype?
A
hH
B
Hh
C
HH
D
hg
2) Which of the following is an example of a heterozygous genotype?
A
Pp
B
pp
C
pk
D
PP
3) What organism did Gregor Mendel use for his investigations into genetics?
A
zebras
B
bean plants
C
humans
D
pea plants
4) 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
There is not enough information about the mice to tell for sure.
B
Yes, but it would be rare (5% chance)
C
Yes, about half would be white and half would be brown
D
No, none of the mice would be brown
5) 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
75%
B
50%
C
0%
D
100%
6) 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
25%
B
0%
C
50%
D
100%
7) Which of the following represents a true-breeding/purebred genotype?
A
tt
B
Rr
C
R
D
Tt
8) In mice, brown fur is dominant to white fur. Is it possible for two brown mice to produce offspring that are white?
A
No, the mice would all be tan.
B
Yes, but only if the parents are both homozygous
C
No, the mice would always be brown
D
Yes, but only if the parents are both heterozygous
9) 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
0%
B
50%
C
100%
D
25%
10) 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
11) 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
25%
B
0%
C
100%
D
50%
12) Which of the following is a possible genotype of a person with Type O blood?
A
Bo
B
oo
C
AB
D
Ao
13) Which of the following is a possible *phenotype* for human blood type?
A
Type A
B
AB
C
Bo
D
oo
14) How many different POSSIBLE alleles are there for human blood type (NOT including Rh factor)?
A
6
B
4
C
3
D
2
15) In snapdragons, red flowers are INCOMPLETELY dominant over white flowers. What chance do two PINK snapdragons have of producing a white snapdragon?
A
50%
B
100%
C
0%
D
25%
16) What type of inheritance results in a BLENDED coloring for the heterozygous offspring?
A
polygenic inheritance
B
complete dominance
C
codominance
D
incomplete dominance
17) What type of inheritance occurs when more than one allele is dominant?
A
polygenic inheritance
B
complete dominance
C
incomplete dominance
D
codominance
18) What type of cells DO NOT undergo mitosis?
A
liver cells
B
blood cells
C
skin cells
D
sex cells
19) Bacteria reproduce asexually by a process called _____.
A
fragmentation/regeneration
B
binary fission
C
budding
D
parthenogenesis
20) Which of the following is NOT an inherited trait?
A
eye color
B
birds migrate each year
C
a raccoon knows to look through trash for food.
D
tongue-rolling
*select an answer for all questions
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