Monohybrid Cross Practice

Front

What is a monohybrid cross?

Back

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

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

What does the phenotypic ratio represent?

Back

The phenotypic ratio represents the relative number of offspring with different observable traits resulting from a genetic cross.

Front

What is the genotypic ratio?

Back

The genotypic ratio is the ratio of different genetic combinations (genotypes) that can result from a genetic cross.

Front

How many alleles does a child inherit from each parent for a trait?

Back

A child inherits one allele from each parent for a trait, making a total of two alleles.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

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

Front

What is the significance of the 3:1 phenotypic ratio in a monohybrid cross?

Back

The 3:1 phenotypic ratio indicates that in a typical monohybrid cross of two heterozygous parents, three offspring will show the dominant trait for every one that shows the recessive trait.

Front

What does a 1:2:1 genotypic ratio indicate?

Back

A 1:2:1 genotypic ratio indicates that in a monohybrid cross of two heterozygous parents, one offspring will be homozygous dominant, two will be heterozygous, and one will be homozygous recessive.

Front

What is the difference between phenotype and genotype?

Back

Phenotype refers to the observable traits of an organism, while genotype refers to the genetic makeup or alleles that determine those traits.