Two Factor Cross

What genotype is missing from this Punnett Square?

• RrYy
• RRYY
• rryy
• RrYY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

• 9/16
• 3/16
• 1/16
• 16/16

Tags

NGSS.HS-LS3-2

A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?

• 12.5%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-3

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

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-LS4-4

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%

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following statements best explains why dominant alleles that cause lethal disorders are less common than recessive alleles that cause lethal disorders?

• The presence of a lethal dominant allele causes the inability to reproduce
• Lethal disorders caused by dominant alleles are usually more severe than lethal disorders caused by recessive alleles
• Unlike lethal disorders caused by recessive alleles, lethal disorders cause by dominant alleles usually cause the death of the embryo
• Most individuals carrying a lethal dominant allele have the disorder and die before they reproduce, whereas individuals carrying a lethal recessive allele are more likely to be healthy and reproduce

Tags

NGSS.HS-LS4-2

What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits?

• 1/16
• 4/16
• 8/16
• 3/16

Tags

NGSS.HS-LS3-3