What is a Punnett Square?
Punnett Square Practice

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•
Science
•
7th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.
2.
FLASHCARD QUESTION
Front
What does the term 'allele' mean?
Back
An allele is a variant form of a gene that can produce different traits.
3.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive traits?
Back
Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.
4.
FLASHCARD QUESTION
Front
What is the genotype for a homozygous dominant individual?
Back
The genotype for a homozygous dominant individual is represented as 'AA'.
5.
FLASHCARD QUESTION
Front
What is the genotype for a homozygous recessive individual?
Back
The genotype for a homozygous recessive individual is represented as 'aa'.
6.
FLASHCARD QUESTION
Front
What does 'heterozygous' mean?
Back
Heterozygous refers to having two different alleles for a particular gene, such as 'Aa'.
7.
FLASHCARD QUESTION
Front
How do you determine the probability of an offspring having a dominant trait using a Punnett Square?
Back
You count the number of squares showing the dominant trait and divide by the total number of squares.
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