Punnett Squares

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 the term 'allele' mean?

Back

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

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele is expressed in the phenotype even if only one copy is present, while a recessive allele is only expressed if two copies are present.

Front

What does 'homozygous' mean?

Back

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

Front

What does 'heterozygous' mean?

Back

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

Front

What is phenotype?

Back

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

Front

What is genotype?

Back

Genotype is the genetic constitution of an individual, specifically the alleles present for a particular gene.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where one allele does not completely dominate another, resulting in a phenotype that is a blend of both traits.

Front

What is the expected genotype ratio from a monohybrid cross?

Back

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

Front

What is the expected phenotype ratio from a monohybrid cross?

Back

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