DPHS Unit 3.2 Quiz #1

A variant/version of a gene is called a what?

• Allele

• Genotype

• Chromosome

• Gene

A physical characteristic like eye color or height is called what?

• Allele

• Genotype

• Chromosome

• Trait

Tags

NGSS.HS-LS3-1

A pair of alleles that show an organism's genetic makeup is called a what?

• Allele

• Genotype

• Chromosome

• Gene

The physical traits of an organism that are controlled by the genotype are called what?

• Allele

• Phenotype

• Chromosome

• Gene

Tags

NGSS.HS-LS3-1

What type of allele is ALWAYS expressed when present in the genotype?

• Dominant allele

• Recessive allele

• Homozygous allele

• Heterozygous allele

What type of allele is ONLY expressed when no dominant alleles are present in the genotype?

• Dominant allele

• Recessive allele

• Homozygous allele

• Heterozygous allele

Check all the genotypes below that are homozygous:

• aa

• BB

• Bb

• Aa

Check all the genotypes below that are heterozygous:

• aa

• BB

• Bb

• Aa

Check all the genotypes below that would result in the expression of a dominant trait in the phenotype:

• aa

• BB

• Bb

• Aa

Check the genotype below that would result in the expression of a recessive trait in the phenotype:

• aa

• BB

• Bb

• Aa