Punnett Squares 2

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 genotype mean?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it carries for a particular trait.

Front

What does phenotype mean?

Back

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

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait (e.g., AA or aa), while heterozygous means having two different alleles (e.g., Aa).

Front

What does homozygous recessive mean?

Back

Homozygous recessive refers to an organism that has two recessive alleles for a trait (e.g., 'ff').

Front

What is the purpose of a Punnett Square?

Back

The purpose of a Punnett Square is to predict the probability of an offspring inheriting particular traits based on the genetic makeup of the parents.

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What does it mean if an organism is 'dominant'?

Back

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

Front

What is a genetic cross?

Back

A genetic cross is the breeding of two organisms to analyze the inheritance of specific traits.

Front

What is the expected ratio of offspring from a cross between two heterozygous parents (e.g., Aa x Aa)?

Back

The expected ratio is 1 AA : 2 Aa : 1 aa.