
Punnett Square review
Authored by Carrie Buffington
Science
7th Grade
NGSS covered
Used 14+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If two parents are heterozygous for Red (R). What would be the genotypic ratio of their offspring?
2:2
3:1
1:2:1
4:0
Tags
NGSS.HS-LS3-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If T is dominant for tall, what are the possible phenotypes of the offspring when the following parents are crossed: TT x tt?
50% tall and 50% short
100% tall
100% short
75% tall and 25% short
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two pink flowering plants are crossed. The offspring’s phenotypes are 75% red and 25% white. What is the phenotypic ratio?
3:1
2:2
1:2:1
4:0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider the Punnett Square Diagram to help you answer the question. In this type of rabbit, the allele for fluffy fur (F) is dominant over the allele for bristly fur (f). Which of the following describes all possible genotypes resulting from a cross between
Parent 1 and Parent 2?
FF and ff
FF, Ff, and ff
Fluffy furred rabbits
Bristly furred rabbits
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How could crossing a white flower and a red flower produce plants with pink flowers?
The pink flower has incomplete dominant red and white genes.
The genes for red color and white color do not affect each other.
The pink flower only gets the genes for color from one of the parent plants.
The gene for pink color is in all flowers, but the genes for red and white color are only in some of the flowers.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You have 2 mice. One is white and the other is black. Their alleles are codominant. What will their offspring look like?
white
black
gray
white and black
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In humans, having freckles is dominant to no freckles. Which of the following statements BEST describes the child represented in box 1 of the Punnett Square?
Homozygous freckled
Homozygous no freckles
Heterozygous freckled.
Heterozygous no freckles
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
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