An Intro to Genetics

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What is genetics?

Back

Genetics is the study of heredity and the variation of inherited characteristics.

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What is an allele?

Back

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

Front

What does dominant mean in genetics?

Back

A dominant allele is one that expresses its trait even in the presence of a recessive allele.

Front

What does recessive mean in genetics?

Back

A recessive allele is one that only expresses its trait when two copies are present.

Front

What is a genotype?

Back

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

Front

What is a phenotype?

Back

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

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotypes of offspring from a genetic cross.

Front

What does homozygous mean?

Back

Homozygous refers to an organism that has two identical alleles for a trait (e.g., TT or tt).

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What does heterozygous mean?

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Heterozygous refers to an organism that has two different alleles for a trait (e.g., Tt).

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What is a monohybrid cross?

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A monohybrid cross is a genetic cross between parents that differ in one trait.