Punnett Square Practice

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotype and phenotype combinations of a genetic cross.

Front

What does the term 'phenotype' refer to?

Back

Phenotype refers to the observable physical characteristics of an organism, determined by its genotype.

Front

What does the term 'genotype' refer to?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.

Front

What is the difference between homozygous and heterozygous genotypes?

Back

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

Front

What is the probability of obtaining a homozygous dominant offspring from a cross between two heterozygous parents (Aa x Aa)?

Back

The probability is 25%.

Front

What is the expected phenotype ratio for a monohybrid cross?

Back

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

Front

What does 'dominant' mean in genetics?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What does 'recessive' mean in genetics?

Back

A recessive allele is one that only expresses its trait when two copies are present in the genotype.

Front

If a parent has genotype Bb, what are the possible alleles they can pass on to their offspring?

Back

The possible alleles are B and b.

Front

What is the significance of the F1 generation in genetics?

Back

The F1 generation is the first generation of offspring produced from a cross of two parental (P) genotypes.