Punnett Squares Practic by Barnese

Front

What does each box in a Punnett Square represent?

Back

Each box represents a 25% probability of an offspring's genotype.

Front

What is the term for the observable traits of an organism?

Back

Phenotype

Front

What is the term for the genetic makeup of an organism?

Back

Genotype

Front

If a mother has the genotype 'dd', what is her genetic makeup?

Back

Homozygous Recessive

Front

What are the possible genotypes for a cross that results in TT = 25%, Tt = 50%, tt = 25%?

Back

TT = 25%, Tt = 50%, tt = 25%.

Front

What is the genotype of an organism that has two identical alleles for a trait?

Back

Homozygous.

Front

What is the genotype of an organism that has two different alleles for a trait?

Back

Heterozygous.

Front

In a Punnett Square, what does a 50% probability indicate?

Back

There is a 50% chance of obtaining that specific genotype in the offspring.

Front

What is the phenotype of an organism with the genotype 'TT'?

Back

Tall (assuming 'T' is the dominant allele for tallness).

Front

If a trait is recessive, what must be true for it to be expressed in the phenotype?

Back

The organism must be homozygous recessive for that trait.