Punnett Square Practice Flashcard

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by letters that denote the alleles.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is a dominant allele?

Back

A dominant allele is one that expresses its trait even when only one copy is present (e.g., B in Bb).

Front

What is a recessive allele?

Back

A recessive allele is one that only expresses its trait when two copies are present (e.g., bb).

Front

How do you represent a dominant trait in genetics?

Back

A dominant trait is typically represented by a capital letter (e.g., B for brown eyes).

Front

How do you represent a recessive trait in genetics?

Back

A recessive trait is typically represented by a lowercase letter (e.g., b for blue eyes).

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.