Monohybrid Cross Practice

Front

What is a dominant allele?

Back

A dominant allele is an allele that always shows up in an organism when it is present.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only shows up in an organism if both alleles are recessive.

Front

What does phenotype mean?

Back

Phenotype refers to the observable traits or characteristics of an organism, such as red hair.

Front

What does genotype mean?

Back

Genotype refers to the genetic makeup of an organism, represented by alleles such as Aa or aa.

Front

What is a monohybrid cross?

Back

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

Front

What is the expected phenotype ratio in a monohybrid cross of two heterozygous parents?

Back

The expected phenotype ratio is 3:1, where 3 show the dominant trait and 1 shows the recessive trait.

Front

What does it mean if an organism is homozygous?

Back

An organism is homozygous if it has two identical alleles for a particular trait, such as AA or aa.

Front

What does it mean if an organism is heterozygous?

Back

An organism is heterozygous if it has two different alleles for a particular trait, such as Aa.

Front

In a genetic cross, what does the term 'F1 generation' refer to?

Back

The F1 generation refers to the first generation of offspring resulting from a cross between two parents.

Front

In a genetic cross, what does the term 'F2 generation' refer to?

Back

The F2 generation refers to the second generation of offspring, produced by crossing two F1 individuals.