What is a Punnett Square?
Punnett Square

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•
Biology, Science
•
7th Grade
•
Hard
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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 homozygous mean?
Back
Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.
3.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a particular gene, such as Aa.
4.
FLASHCARD QUESTION
Front
What is a genotype?
Back
A genotype is the genetic makeup of an organism, represented by the alleles it possesses.
5.
FLASHCARD QUESTION
Front
What is a phenotype?
Back
A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.
6.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive alleles?
Back
Dominant alleles express their trait even when only one copy is present, while recessive alleles only express their trait when two copies are present.
7.
FLASHCARD QUESTION
Front
What is the phenotypic ratio?
Back
The phenotypic ratio is the ratio of different phenotypes produced in the offspring from a genetic cross.
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