Genetics Punnett squares

Which genotype is heterozygous?

• HH
• Hh
• hh

Which genotype is homozygous dominant?

• HH
• Hh
• hh

Which genotype is homozygous recessive?

• HH
• Hh
• hh

The physical appearance of a trait is known as the-

• genotype

• phenotype

• Homozygous

• intelligence

If having hairy feet is a dominant trait what are the possible genotypes of a hairy foot person?

• HH or hh
• Hh or hh
• HH or Hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following correctly states the genotype probabilities for the offspring of the parents shown in this punnett square?

• 50% heterozygous 50% homozygous dominant

• 50% heterozygous 50% homozygous recessive

• 50% heterozygous 25% homozygous recessive 25% homozygous dominant

• 100% heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following must be the father's genotype?

• RR

• Rr

• rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a species of mammals, gray fur (G) is dominant to white fur (g). Two heterozygous mammals are mated together and produce offspring. What fraction of offspring will have gray fur?

• 1/4

• 1/2

• 3/4

• 2/4

Tags

NGSS.HS-LS3-3