Monohybrid and Dihybrid Cross Practice

Front

What is a monohybrid cross?

Back

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

Front

What is a dihybrid cross?

Back

A dihybrid cross is a genetic cross between parents that differ in two traits, allowing the study of the inheritance of two characteristics simultaneously.

Front

What does it mean for a trait to be dominant?

Back

A dominant trait is one that is expressed in the phenotype even when only one copy of the allele is present.

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is one that is only expressed in the phenotype when two copies of the allele are present.

Front

How many alleles does an individual have for each trait?

Back

An individual has two alleles for each trait, one inherited from each parent.

Front

What is a genotype?

Back

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

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 outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

In a monohybrid cross, what is the expected phenotypic ratio of the offspring?

Back

The expected phenotypic ratio is typically 3:1 for dominant to recessive traits.

Front

In a dihybrid cross, what is the expected phenotypic ratio of the offspring?

Back

The expected phenotypic ratio is typically 9:3:3:1 for the four possible combinations of traits.