Knowledge Check: Punnett Squares
Quiz
•
Science
•
6th - 8th Grade
•
Medium
Standards-aligned
Carly MacMillan
Used 19+ times
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7 questions
Show all answers
1.
MATCH QUESTION
2 mins • 1 pt
Match the following vocabulary terms:
homozygous
an individual containing two different alleles for a particular trait
genotype
an individual containing two copies of the same allele for a particular trait
phenotype
the observable characteristics of an organism
heterozygous
the genetic makeup of an individual cell or organism that determines or contributes to its phenotype
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The gene for curled ears (C) is dominant over the gene for straight ears (c). The picture shows a cat with curled ears (Cc) and a cat with straight ears (cc). What percent of the offspring are expected to have curled ears as a result of a cross between the cats shown?
100
75
50
25
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
NGSS.HS-LS3-3
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The diagram shows the location of genes for three specific traits of a fly. A fly inherits the genotypes Aa, BB, and cc. Which of the following traits will this organism express?
short appendages on its head, normal wings, and brown eyes
long appendages on its head, normal wings, and brown eyes
long appendages on its head, vestigial wings, and red eyes
short appendages on its head, normal wings, and red eyes
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The Punnett square shows a cross between two pea plants. The gene for green pods (G) is dominant over the gene for yellow pods (g). What percentage of plants produced by the cross shown are expected to have yellow pods?
100%
75%
50%
25%
Tags
NGSS.HS-LS3-3
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
For a particular trait, the allele F is dominant over the allele f. The Punnett square below shows the genetic cross of two parents, each with the genotype Ff. Which box in this Punnett square would contain two dominant alleles?
1
2
3
4
Tags
NGSS.HS-LS3-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The Punnett squares show two different crosses, A and B. Which statement is true about both of these Punnett squares?
The phenotype that results from the dominant allele cannot appear in either cross.
The phenotype resulting from the dominant allele can appear in Cross B, but not Cross A.
The phenotype that results from two recessive alleles can appear in Cross A, but not in Cross B.
The phenotype that results from two recessive alleles can appear in Cross B, but not in Cross A.
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
For a particular trait, R is dominant to r. Look closely at the Punnett square. What is the probability of an offspring having the genotype that results in the appearance of the recessive trait?
50 %
25%
75%
100%
Tags
NGSS.HS-LS3-3
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