Punnett Squares and Pedigrees

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by letters (e.g., Bb, AA).

Front

What does heterozygous mean?

Back

Heterozygous means having two different alleles for a trait, such as Bb.

Front

What is a dominant allele?

Back

A dominant allele is an allele that can mask the effect of a recessive allele. It is represented by a capital letter.

Front

What is a recessive allele?

Back

A recessive allele is an allele that is masked by a dominant allele and is represented by a lowercase letter.

Front

How many alleles does a child inherit from each parent?

Back

A child inherits one allele from each parent for each trait.

Front

What is a phenotype?

Back

A phenotype is the observable physical characteristics of an organism, such as eye color or height.

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.

Front

What is a pedigree?

Back

A pedigree is a chart that shows the genetic relationships and traits within a family over generations.

Front

What does BB represent in genetics?

Back

BB represents a homozygous dominant genotype.

Front

What does bb represent in genetics?

Back

bb represents a homozygous recessive genotype.