DNA, Inheritance, and Mutations

How many pairs of chromosomes does each person have?

• 46

• 23

• 1

• 34

The trait that will always be expressed if at least one copy of an allele is present.

• Dominant

• Recessive

• DNA

Tags

NGSS.HS-LS3-1

The trait that will be expressed only if two copies of the allele are present.

• Dominant

• Recessive

• DNA

What is it called when a gene carries two different types of alleles?

• Homozygous

• Heterozygous

• Monozygous

• Trizygous

Which of the following is heterozygous?

• FF

• Gg

• tt

• RR

Which of the following is homozygous recessive?

• Jj

• MM

• rr

• Ff

Which of the following is homozygous dominant?

• Jj

• MM

• Rr

• ee

Which of the following is heterozygous?

• AA

• Aa

• aa

• BB

Tags

NGSS.HS-LS3-2

Brown eye colour is dominant. Select the combination of letters below that would represent a person being purebred for brown eyes.

• AA

• Aa

• aa

• aA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Blue eye colour is recessive. Select the person that is purebred for blue eyes.

• AA

• Aa

• aa

• aA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2