Punnett Square Practice #1-Missing Alleles

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What is a Punnett Square?

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.

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What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

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What does homozygous mean?

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Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

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What is the genotype?

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The genotype is the genetic makeup of an organism, represented by the alleles it possesses.

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What is the phenotype?

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The phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

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How do you determine the missing allele in a Punnett Square?

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To determine the missing allele, analyze the known alleles of the parents and the offspring to deduce the possible combinations.

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What is the significance of dominant and recessive alleles?

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Dominant alleles mask the effect of recessive alleles in heterozygous conditions, determining the phenotype.

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What is a monohybrid cross?

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A monohybrid cross is a genetic cross that examines the inheritance of a single trait.

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What is a dihybrid cross?

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A dihybrid cross is a genetic cross that examines the inheritance of two different traits.