Basic Genetics (Monohybrid Crosses)

Front

What is a phenotype?

Back

The physical trait, what you see!

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What is a genotype?

Back

The genetic make up (code) of an organism.

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What does heterozygous mean?

Back

Having two different genes for a trait (sometimes called hybrid).

Front

What does homozygous mean?

Back

Having two identical genes for a trait.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the observable traits.

Front

What is a monohybrid cross?

Back

A genetic cross between parents that differ in one trait.

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

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What does it mean if an organism is homozygous dominant?

Back

It has two dominant alleles for a trait (e.g., BB).

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What does it mean if an organism is homozygous recessive?

Back

It has two recessive alleles for a trait (e.g., bb).

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What is an allele?

Back

An alternative form of a gene that can exist at a specific locus.