Punnett Squares

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, represented by the alleles inherited from the parents.

Front

What does homozygous dominant mean?

Back

Homozygous dominant refers to having two identical dominant alleles for a trait, such as AA.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is the percentage of chromosomes shared between a mother and her offspring?

Back

Each offspring shares 50% of their chromosomes with their mother.

Front

What does the notation TT represent in genetics?

Back

TT represents a homozygous dominant genotype for a trait.

Front

What does the notation Tt represent in genetics?

Back

Tt represents a heterozygous genotype for a trait, having one dominant and one recessive allele.

Front

What is the phenotype of TT and Tt genotypes?

Back

Both TT and Tt genotypes result in a tall phenotype.

Front

What is the significance of homozygous recessive in genetics?

Back

Homozygous recessive refers to having two identical recessive alleles for a trait, such as tt.

Front

What is the expected ratio of homozygous recessive offspring from a cross of TT x TT?

Back

The expected ratio of homozygous recessive offspring from a TT x TT cross is 0 in 4.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross.