Front

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 does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

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What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

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What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it carries (e.g., AA, Aa, aa).

Tags

NGSS.HS-LS3-2

Front

What is a phenotype?

Back

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

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What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Tags

NGSS.HS-LS3-2

Front

What does dominant mean in genetics?

Back

Dominant refers to an allele that expresses its trait even when only one copy is present (e.g., A in Aa).

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What does recessive mean in genetics?

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Recessive refers to an allele that only expresses its trait when two copies are present (e.g., aa).

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What is the expected phenotypic ratio from a monohybrid cross?

Back

The expected phenotypic ratio from a monohybrid cross is typically 3:1.

Tags

NGSS.HS-LS3-3

Front

How many alleles do humans carry for each trait?

Back

Humans carry 2 alleles for each trait, one inherited from each parent.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2