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.

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What does the term 'dominant trait' mean?

Back

A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present.

Front

What does the term 'recessive trait' mean?

Back

A recessive trait is a genetic trait that is only expressed in the phenotype when two copies of the allele are present.

Front

What is the genotype for a homozygous dominant individual?

Back

The genotype for a homozygous dominant individual is represented as 'AA'.

Front

What is the genotype for a homozygous recessive individual?

Back

The genotype for a homozygous recessive individual is represented as 'aa'.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a trait, represented as 'Aa'.

Front

How do you calculate the probability of an offspring having a dominant trait?

Back

To calculate the probability, count the number of dominant allele combinations in the Punnett Square and divide by the total number of combinations.

Front

What is the probability of obtaining a heterozygous offspring from a cross of 'Aa' and 'Aa'?

Back

The probability of obtaining a heterozygous offspring (Aa) from a cross of 'Aa' and 'Aa' is 50%.

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What does 'phenotype' refer to?

Back

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

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What does 'genotype' refer to?

Back

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