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