Genetics Review

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr

• R

• RR

• RR or Rr

Tags

NGSS.HS-LS3-1

What you see, or the physical appearance.

• Genotype

• Phenotype

• Homozygous

• Heterozygous

How many alleles (letters) do each person carry for a trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa

• red hair

• heterozygous

• DNA

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none

• 3/4

• 1/2

• all

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?

• 100%

• 0%

• 75%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What do half colored symbols represent?

• The individual is a carrier (heterozygous).

• The individual expresses the trait.

• The individual has both recessive alleles.

• The individual has both dominant alleles.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Who is the Father of Genetics?

• Robert Hooke

• Gregor Mendel

• Albert Einsten

• Albert Wegener

What is the study of how traits are passed from parents to offspring?

• biology

• botany

• molecular biology

• genetics

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What does heterozygous mean?

• the different forms of a trait (red hair, brown hair, etc)

• when an organism has two of the same alleles for a trait (ex. RR)

• when an organism has two different alleles for a trait (ex.Tt)

• neither gene is dominant over the other and a blend of both traits appear in the offspring

Tags

NGSS.HS-LS3-2