EOC Genetics

Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.MS-LS3-2

What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?

• Ry

• RRyy

• RrYy

• Rryy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?

• RrYy

• RRyy

• RRYy

• rryy

Different traits are inherited independently of each other

• Law of independent assortment

• Genetics law

The ___________ states that a recessive allele is only expressed when a dominant allele is not present.

• Law of Dominance

• Law of Inheritance

What is the phenotypic ratio for the monohybrid cross between blue and brown eyes?

• 3:1

• 2:2

• 0:2:1

• 1:2:1

When Mendel was experimenting with pea plant crosses, one of the traits that he examined was seed texture. The two phenotypes are smooth and wrinkled. The totals for his F2 generation were 5,474 smooth and 1,850 wrinkled seeds. Which probability ratio best predicts this outcome?

• 2:1

• 3:1

• 4:1

• 5:1

Tags

NGSS.HS-LS4-3

Sickle cell anemia is an autosomal recessive disorder. If each parent carries one sickle cell allele, what are the chances that their child will have sickle cell anemia?

• no chance

• one in four

• two in four

• three in four

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The gene for black fur (B) is dominant over the gene for white fur (b) in mice. A homozygous dominant female and a heterozygous male produce 200 offspring during their lifetime. Approximately how many offspring would be expected to be homozygous dominant?

• 25

• 50

• 100

• 200

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the chance of two parents with blood types AB and O producing an offspring with blood type O?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-3