Punnett Square Practice

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 homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

Front

What is the probability of getting a recessive trait in a Punnett Square?

Back

The probability of getting a recessive trait depends on the genotypes of the parents and can be calculated using the Punnett Square.

Front

In a Punnett Square, what does the term 'allele' refer to?

Back

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

Front

What is the phenotype?

Back

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

Front

What is the genotype?

Back

The genotype is the genetic constitution of an organism, represented by the alleles it possesses.

Front

What is the probability of having a homozygous offspring when crossing two heterozygous parents?

Back

The probability is 25% for homozygous offspring.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

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