Phenotype vs Genotype

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, specifically the alleles present for a particular gene.

Tags

NGSS.HS-LS3-2

Front

What does homozygous mean?

Back

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

Front

What does heterozygous mean?

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

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What is a dominant allele?

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A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype.

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What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present in the genotype.

Front

If a trait is dominant, what does that mean for its expression?

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If a trait is dominant, it will be expressed in the phenotype even if only one dominant allele is present.

Front

If a trait is recessive, what must be true for it to be expressed?

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For a recessive trait to be expressed, an individual must have two copies of the recessive allele.

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What is an example of a phenotype?

Back

An example of a phenotype is blue eyes, which is an observable characteristic.

Tags

NGSS.HS-LS3-1

Front

What is an example of a genotype?

Back

An example of a genotype is Bb, which indicates one dominant allele and one recessive allele.