monohybrid and dihybrid cross

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 with two alleles.

Front

What is a dihybrid cross?

Back

A dihybrid cross is a genetic cross between parents that differ in two traits, focusing on the inheritance of two genes, each with two alleles.

Front

Define homozygous dominant.

Back

Homozygous dominant refers to an organism that has two identical dominant alleles for a particular gene (e.g., AA).

Front

Define homozygous recessive.

Back

Homozygous recessive refers to an organism that has two identical recessive alleles for a particular gene (e.g., aa).

Front

What is the genotype of an organism with one dominant and one recessive allele?

Back

The genotype is heterozygous (e.g., Aa).

Front

What is the phenotypic ratio expected from a monohybrid cross?

Back

The expected phenotypic ratio from a monohybrid cross is 3:1.

Front

What is the genotypic ratio expected from a monohybrid cross?

Back

The expected genotypic ratio from a monohybrid cross is 1:2:1.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where neither allele is completely dominant, resulting in a blend of traits (e.g., red and white flowers producing pink flowers).

Front

What is the probability of obtaining a homozygous dominant offspring from a cross between a homozygous dominant and a homozygous recessive parent?

Back

The probability is 100% for homozygous dominant offspring.

Front

What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents?

Back

The probability is 25% for homozygous recessive offspring.