Heredity and Pedigrees

What is the study of heredity?

• biology

• pedigrees

• Punnett Squares

• Genetics

Which term means "same alleles"?

• heterozygous.

• genes.

• homozygous.

• DNA.

A genotype is

• the physical appearance of an organism.

• a made up word for genes.

• not even a word.

• two alleles that an organism possesses.

A snapdragon is red, white, or pink. This means it is determined by

• Mendelian genetics.

• incomplete dominance.

• codominance.

• sex-linked inheritance.

A chicken is black, white, or black and white. This is controlled by

• Mendelian inheritance.

• incomplete dominance.

• codominance.

• sex-linked inheritance.

Colorblindness is more common in males because it is controlled by

• Mendelian inheritance.

• Incomplete dominance.

• codominance.

• Sex-linked inheritance.

This pedigree shows a trait that is most likely

• autosomal dominant.

• sex-linked.

• autosomal recessive.

The mom in generation 1

• has the disorder.

• is homozygous for the trait.

• is a carrier.

This is an autosomal recessive disorder. The parents in generation one must

• have the disease.

• be homozygous.

• be heterozygous.

• be related.

In generation 2 which individual died?

• 1

• 2

• 3

• 4