Genetics Punnett Squares
Authored by Charles Martinez
Biology
7th Grade
NGSS covered
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35 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Aa, DD, bB, yy are all examples of
genotypes
phenotypes
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
AA and Aa always show up as
dominant
recessive
Tags
NGSS.HS-LS3-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
0 in 4
1 in 4
2 in 4
4 in 4
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following genotypes is homozygous dominant?
A
Aa
AA
aa
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following genotypes is heterozygous?
Bb
BB
bb
B
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
lower case letter
both
7.
MULTIPLE CHOICE QUESTION
30 sec • 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%
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