Punnett squares intro

Front

What is a Punnett Square?

Back

A Punnett Square is a tool used to predict the possible genotypes of offspring from two parents.

Front

What does genotype mean?

Back

Genotype refers to the genetic makeup of an organism, represented by letters (e.g., AA, Aa, aa).

Front

What does phenotype mean?

Back

Phenotype refers to the physical appearance or characteristics of an organism (e.g., red hair, brown eyes).

Front

What is the probability of homozygous dominant offspring if both parents are heterozygous?

Back

25%.

Front

If B = brown hair and b = blonde hair, what is the probability of having a blonde-haired offspring from two heterozygous parents?

Back

25%.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles (e.g., AA or aa), while heterozygous means having two different alleles (e.g., Aa).

Front

What is an allele?

Back

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

Front

What does it mean if an organism is homozygous recessive?

Back

It means the organism has two recessive alleles (e.g., aa) for a trait.

Front

What is the purpose of a Punnett Square?

Back

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

Front

What is the phenotype of an organism with genotype Aa?

Back

The phenotype can be dominant (if A is dominant) or a mix, depending on the trait.