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 a 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 a recessive trait mean?

Back

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

Front

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

Back

The probability is determined by analyzing the allele combinations in the Punnett Square and counting the number of dominant allele combinations.

Front

What is the genotype for a homozygous dominant individual?

Back

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

Front

What is the genotype for a homozygous recessive individual?

Back

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

Front

What is the genotype for a heterozygous individual?

Back

The genotype for a heterozygous individual is represented as 'Aa' or 'Dd'.

Front

What is the significance of the allele combination in a Punnett Square?

Back

The allele combination determines the traits that the offspring may inherit from the parents.

Front

What is the expected phenotypic ratio for a monohybrid cross of two heterozygous parents?

Back

The expected phenotypic ratio is 3:1, where 3 offspring show the dominant trait and 1 shows the recessive trait.

Front

What is the expected genotypic ratio for a monohybrid cross of two heterozygous parents?

Back

The expected genotypic ratio is 1:2:1, representing one homozygous dominant, two heterozygous, and one homozygous recessive.