Simple Punnett Square Formative Assessment #2

Front

What is a homozygous dominant genotype?

Back

A homozygous dominant genotype has two identical dominant alleles, represented as 'YY'.

Front

What is a homozygous recessive genotype?

Back

A homozygous recessive genotype has two identical recessive alleles, represented as 'tt'.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has one dominant and one recessive allele, represented as 'Bb'.

Front

What are genotypes?

Back

Genotypes are the genetic makeup of an organism, represented by the alleles it possesses (e.g., BB, Bb, bb).

Front

What are phenotypes?

Back

Phenotypes are the observable traits or characteristics of an organism, determined by its genotype.

Front

What does a Punnett square illustrate?

Back

A Punnett square illustrates the possible genetic combinations of offspring from two parents.

Front

If both parents are homozygous dominant (YY), what are the possible genotypes of their offspring?

Back

All offspring will be homozygous dominant (YY).

Front

If one parent is homozygous recessive (yy) and the other is heterozygous (Yy), what percent of the offspring will be homozygous recessive?

Back

50% of the offspring will be homozygous recessive (yy).

Front

What is the expected phenotype ratio for a monohybrid cross between two heterozygous parents (Bb x Bb)?

Back

The expected phenotype ratio is 3:1 (3 dominant: 1 recessive).

Front

What does it mean if a trait is dominant?

Back

A dominant trait is expressed in the phenotype even if only one dominant allele is present.