Punnett Square, Incomplete & Codominance Review

Front

The different forms of a gene are called ---

Back

alleles

Front

The blending of two traits is known as ---

Back

incomplete dominance

Front

How many alleles does an individual have for each trait?

Back

2

Front

In a Punnett square, if T = tall and t = short, what belongs in the missing square if the parents are Tt and Tt?

Back

tt

Front

Which of the following genotypes is heterozygous? Bb, BB, bb, B

Back

Bb

Front

What is the definition of codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What is the purpose of a Punnett square?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What does it mean if an organism is homozygous for a trait?

Back

It has two identical alleles for that trait.

Front

What is the phenotype ratio expected from a monohybrid cross?

Back

3:1 ratio of dominant to recessive phenotypes.

Front

What is the genotype of an organism that expresses a dominant trait but is heterozygous?

Back

It has one dominant allele and one recessive allele (e.g., Aa).