Punnett Squares, Traits, and Genetic Material

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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 is a phenotype?

Back

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

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What is a genotype?

Back

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

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What is heredity?

Back

Heredity is the passing down of traits from parents to their offspring.

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What are dominant traits?

Back

Dominant traits are traits that are expressed in the phenotype even if only one allele is present.

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What are recessive traits?

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Recessive traits are traits that are only expressed in the phenotype if two copies of the allele are present.

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What is the difference between homozygous and heterozygous?

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Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles for a trait.

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What does it mean to be heterozygous for a trait?

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Being heterozygous for a trait means having one dominant allele and one recessive allele.

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What is a trait?

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A trait is a specific characteristic of an organism, such as eye color or height.

Front

What is the role of DNA in heredity?

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DNA carries the genetic information that is passed from parents to offspring, determining their traits.