Genetics and Pedigree

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.

The mom in generation 1

• has the disorder.

• is homozygous for the trait.

• is a carrier.

Which combination of sex chromosomes results in a male?

• XX

• YY

• XY

If the person is filled in

• they don't have the disorder.

• they are homozygous dominant.

• they are heterozygous.

• they are homozygous recessive.

Generation 2 individual 3 is

• male.

• female.

If you cross a white flower (pp) with a purple flower (PP), the possible genotypes of the offspring are

• PP and pp

• All Pp

• All PP

• All pp

If you crossed a PP (purple) with a pp (white), what would the phenotypes be?

• all white

• all tall

• all purple

• 1/2 white, 1/2 purple