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 the genotype 'Bb' represent?

Back

The genotype 'Bb' represents a heterozygous individual with one dominant allele (B) and one recessive allele (b).

Front

What is the phenotype associated with the genotype 'Bb'?

Back

The phenotype associated with the genotype 'Bb' is typically the dominant trait, which in this case is a Blue Chicken.

Front

What is the genotype for black chickens?

Back

The genotype for black chickens is 'bb', which is homozygous recessive.

Front

What is an allele?

Back

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

Front

What is the probability of an offspring having a recessive trait if both parents are heterozygous (Bb)?

Back

The probability of an offspring having a recessive trait from two heterozygous parents (Bb x Bb) is 25%.

Front

What is the probability of an offspring having a dominant trait if one parent is homozygous dominant (BB) and the other is homozygous recessive (bb)?

Back

The probability of an offspring having a dominant trait from a BB and bb cross is 100%.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an individual (the alleles), while phenotype refers to the observable traits or characteristics.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, either dominant (AA) or recessive (aa).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Bb).