Punnett Squares
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7th Grade
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Heterozygous is when...
the alleles are the same
the alleles are different
the alleles are absent
the alleles are present
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
lower case letter
both
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
T - tall and t = short
In the punnett square below, what belongs in the missing square
tt
Tt
Bb
TT
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
G = green, g = yellow
The genotype for a yellow plant is...
GG
Gg
gg
all of the choices result in yellow
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
0%
25%
50%
75%
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
0%
25%
50%
75%
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT a genotype?
heterozygous
a trait
Bb
homozygous recessive
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