Punnett Squares 2

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, represented by the alleles inherited 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 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

In a Punnett square, what does each box represent?

Back

Each box in a Punnett square represents a possible genotype of the offspring resulting from the combination of alleles from the parents.

Front

What is the significance of the letters used in genotypes (e.g., A, a, B, b)?

Back

Uppercase letters represent dominant alleles, while lowercase letters represent recessive alleles.

Front

If a parent has the genotype AA, what are the possible genotypes of their offspring when crossed with a heterozygous parent (Aa)?

Back

The possible genotypes of the offspring are AA and Aa.

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents (Aa x Aa)?

Back

The expected phenotypic ratio is 3:1, where 3 exhibit the dominant phenotype and 1 exhibits the recessive phenotype.

Front

What is the purpose of using a Punnett square in genetics?

Back

The purpose is to visualize and calculate the probability of different genotypes and phenotypes in the offspring.

Front

What genotype is represented by the combination Ff in a Punnett square?

Back

Ff represents a heterozygous genotype, where F is the dominant allele and f is the recessive allele.