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Genetics Review Game
Test Description: Semester 2 review
Instructions: Answer all questions to get your test result.
1) Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is heterozygous for tallness?
A
Tt
B
TT
C
tT
D
tt
2) An individual heterozygous for a trait and an individual homozygous recessive for the trait are crossed and produce many offspring that are
A
all the same phenotype.
B
of three different phenotypes.
C
all the same genotype.
D
of two different phenotypes.
3) Individuals must exhibit a trait in order for it to appear in their offspring.
A
True
B
False
4) What are the 2 different gametes?
A
baseball and softball
B
XX XY
C
egg and sperm
D
X and Y
5) The sperm can carry which of the following during fertilization?
A
Y
B
X or y
C
X
D
X and Y
6) Lethal dominant alleles are less common than lethal recessive alleles because
A
lethal dominant alleles cannot be caused by a natural mutation.
B
none of the above
C
most people with dominant disorders die before producing offspring.
D
ethal recessive alleles usually have a large effect on carriers.
7) Offsprings get______ chromosomes from their father and ______ chromosomes from their mother.
A
46,46
B
23,23
C
13,13
D
1, 1
8) Organisms that are heterozygous have...
A
genetic mutations
B
different alleles
C
2 of the same alleles
D
a slight awkwardness to them
9) A recessive trait is shown by a
A
lowercase letter
B
big and little letter
C
a number
D
capital letter
10) If you crossed a male with a female, what would be the chances of the offspring being a female?
A
25%
B
0%
C
50%
D
100%
*select an answer for all questions
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