Genetics Regents

If a person is heterozygous for brown hair, what is their genotype?

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous: Different, Homozygous:_____________

• The same

• Less Than

• Greater Than

• 4 copies

This type of disease CANNOT be spread from person to person

• Contagious

• Infectious

• Genetic

P= purple petals and p= white petals. What genotype(s) would result in purple petals?

• pp

• Pp, pp

• PP, Pp

• PP, pp

Tags

NGSS.HS-LS3-1

How many copies of the recessive gene must there be for that phenotype to show up?

• 1

• 2

• 3

• 4

A version of a gene is called a(n)

• allele

• characteristic

• specific gene

• trait

Tags

NGSS.HS-LS3-1

A trait that is expressed if one copy of the allele is present is a(n)

• characteristic

• dominant trait

• gene

• recessive trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

Tags

NGSS.HS-LS3-1

An organism’s physical expression of a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

Tags

NGSS.HS-LS3-1

What is it called when both alleles in a genotype are the same?

• Dominance

• Heterozygous

• Homozygous

• Recessiveness

Tags

NGSS.HS-LS3-1