Monohybrid Cross Practice

Front

What is a gene?

Back

A piece of DNA on a chromosome that codes for a trait.

Front

What is the yellow seed genotype?

Back

AA or Aa.

Front

Each offspring receives how many allele(s) from each parent per trait?

Back

1.

Front

In guinea pigs, if one parent is homozygous for black hair (BB) and the other is heterozygous (Bb), what percentage of their offspring are expected to have black hair?

Back

100%.

Front

Which law claims that alleles will come together independently of each other in the offspring?

Back

Law of Independent Assortment.

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous has two identical alleles (e.g., AA or aa), while heterozygous has two different alleles (e.g., Aa).

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is a dominant allele?

Back

An allele that expresses its trait even when only one copy is present (e.g., B in Bb).

Front

What is a recessive allele?

Back

An allele that only expresses its trait when two copies are present (e.g., aa).

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible allele combinations from the parents.