Traits & Inheritance Review Questions

Front

Who is Gregor Mendel?

Back

Gregor Mendel was a Catholic Monk known as the father of genetics for his work on inheritance patterns in pea plants.

Front

What is the expected phenotypic ratio in the F2 generation from a monohybrid cross?

Back

The expected phenotypic ratio in the F2 generation from a monohybrid cross is 3:1.

Front

What are the genotypes of the parental generation if the F2 generation shows a 3:1 ratio?

Back

The genotypes of the parental generation are AA (homozygous dominant) and aa (homozygous recessive).

Front

What is the probability of offspring expressing a recessive trait from two heterozygous parents?

Back

The probability is 25%.

Front

What does a heterozygous genotype look like?

Back

A heterozygous genotype consists of two different alleles, such as Aa.

Front

What is the genotype of parents if a blue-eyed daughter (bb) is born to brown-eyed parents?

Back

The genotype of each parent is Bb (heterozygous for brown eyes).

Front

Define phenotype.

Back

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

Front

Define genotype.

Back

Genotype is the genetic constitution of an individual, represented by the alleles inherited from the parents.

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its phenotype even in the presence of a recessive allele.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its phenotype when two copies are present (homozygous).