Punnett Squares 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.

Front

What does it mean if a trait is dominant?

Back

A dominant trait is one that will appear in the phenotype even if only one allele is present.

Front

What is the probability of an offspring being purple if both parents are homozygous dominant (PP)?

Back

100% probability of being purple.

Front

What is the phenotype of an organism?

Back

The phenotype is the physical appearance or visible traits of an organism.

Front

What is heredity?

Back

Heredity is the passing of traits from parents to offspring.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.

Front

If T = tall and t = short, what is the genotype of a homozygous recessive plant?

Back

tt.

Front

What is the ratio of offspring that will be homozygous recessive from a cross of Tt x Tt?

Back

1 in 4.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.