Mendel Genetics

Front

Heredity is the passing of traits from _____________________ to _____________________

Back

parents to offspring

Front

What is a gene?

Back

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

Front

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

Back

qq

Front

What term denotes the physical expression of a gene?

Back

phenotype

Front

Which of the following is heterozygous? MM, Mm, mm

Back

Mm

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by alleles.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What does it mean if an organism is homozygous?

Back

It has two identical alleles for a particular gene.

Front

What does it mean if an organism is heterozygous?

Back

It has two different alleles for a particular gene.

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.