Genetics and Heredity

True or False  When B = Dominant brown eyes and b = recessive blue eyes: The genotype BB or Bb will have a phenotype of blue eyes.

• true
• false

Tags

NGSS.HS-LS3-1

True or False - When a single gene controls a trait the dominant allele on a gene will control the phenotype (i.e., what you see).

• true
• false

Tags

NGSS.HS-LS3-1

8. D = dominant trait chin dimple and d = recessive trait no chin dimple. Which genotype (i.e., allele combination) will create an individual with no chin dimple?

• DD, Dd
• DD
• Dd
• dd

Tags

NGSS.HS-LS3-1

Homozygous means . . . .

• similar or the same
• drastically different
• different

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous means . . . . . .

• similar or the same
• different
• exactly the same

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the probability of the children being homozygous?

• 0/4 = 0 x 100 = 0%
• 4/4 = 1 x 100 = 100%
• 2/4 = .5 x 100 = 50%

Tags

NGSS.HS-LS3-3

What is the probability of the children being heterozygous?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What is the probability of the children being homozygous?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-3

What is the probability of the children being homozygous?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

B = brown eyes  b = blue eyes
How many children have blue eyes?

• 2
• 4
• 3
• 0

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3