Mendel Genetics

Front

Heredity is the passing of traits from _____________________ to _____________________

Back

parents to offspring

Front

If black fur is dominant and white fur is recessive, what are the possible offspring of two black mice bred together?

Back

any of the above are possible, depending on the parents' genotypes

Front

Which of the following is homozygous recessive? QQ, Qq, or qq?

Back

qq

Front

What is a gene?

Back

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

Front

What term denotes the physical expression of a gene?

Back

phenotype

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the physical expression of that genetic makeup.

Front

What does it mean for a trait to be dominant?

Back

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

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is only expressed in the phenotype if two copies of the allele are present.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What is the purpose of a test cross?

Back

A test cross is used to determine the genotype of an individual with a dominant phenotype by crossing it with a homozygous recessive individual.