What is a Punnett Square?
Genetics: Punnett Square

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Biology
•
7th Grade - University
•
Easy
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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 BB or bb.
3.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a particular gene, such as Bb.
4.
FLASHCARD QUESTION
Front
What is a phenotype?
Back
Phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.
5.
FLASHCARD QUESTION
Front
What is a genotype?
Back
Genotype is the genetic constitution of an individual, represented by the alleles it possesses.
6.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive alleles?
Back
Dominant alleles are expressed in the phenotype even when only one copy is present, while recessive alleles are only expressed when two copies are present.
7.
FLASHCARD QUESTION
Front
If a tall plant (Tt) is crossed with a short plant (tt), what are the possible phenotypes of the offspring?
Back
50% tall; 50% short.
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