Punnett squares

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•
Science
•
8th Grade
•
Hard
Standards-aligned
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1.
FLASHCARD QUESTION
Front
What is a Punnett square?
Back
A Punnett square is a diagram used to predict the genotype and phenotype combinations of offspring from a genetic cross.
2.
FLASHCARD QUESTION
Front
What do the letters in a Punnett square represent?
Back
The letters represent alleles, where uppercase letters denote dominant alleles and lowercase letters denote recessive alleles.
3.
FLASHCARD QUESTION
Front
What is the genotype of an organism with two identical alleles?
Back
The genotype is homozygous.
4.
FLASHCARD QUESTION
Front
What is the genotype of an organism with two different alleles?
Back
The genotype is heterozygous.
5.
FLASHCARD QUESTION
Front
What is the phenotypic ratio of a monohybrid cross between two heterozygous parents (Aa x Aa)?
Back
The phenotypic ratio is 3:1.
6.
FLASHCARD QUESTION
Front
What is the expected phenotype ratio for a dihybrid cross (AaBb x AaBb)?
Back
The expected phenotype ratio is 9:3:3:1.
7.
FLASHCARD QUESTION
Front
What is incomplete dominance in genetics?
Back
Incomplete dominance is a form of inheritance where the phenotype of the heterozygote is intermediate between the phenotypes of the homozygotes.
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