Monohybrid Cross Practice

Front

What is a monohybrid cross?

Back

A monohybrid cross is a genetic cross between two individuals that differ in one trait, focusing on the inheritance of a single characteristic.

Front

What does it mean for an allele to be dominant?

Back

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

Front

What does it mean for an allele to be recessive?

Back

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

Front

What is the genotype of a homozygous individual?

Back

A homozygous individual has two identical alleles for a specific gene, either dominant (AA) or recessive (aa).

Front

What is the genotype of a heterozygous individual?

Back

A heterozygous individual has two different alleles for a specific gene, one dominant and one recessive (Aa).

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 and phenotypes of offspring from a genetic cross.

Front

How do you calculate the percentage of offspring with a certain phenotype?

Back

To calculate the percentage of offspring with a certain phenotype, divide the number of offspring with that phenotype by the total number of offspring and multiply by 100.

Front

What is the expected phenotype ratio from a monohybrid cross between two heterozygous parents?

Back

The expected phenotype ratio is 3:1, with three exhibiting the dominant trait and one exhibiting the recessive trait.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.