SBI 3U Dihybrid Crosses, Test Cross & Pedigrees Quiz

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? [Type the answer in fraction]

(a)  

Tags

NGSS.HS-LS3-3

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

Cross Two Homozygous plants

(RRYY x rryy)

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

What is the probability for an offspring to have Round and Yellow seeds? [Answer in fraction]

(a)  

Tags

NGSS.HS-LS3-3

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

• BBEE x bbee

• BBEe x BbEe

• BbEE x BbEe

• BBee x BBEE

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In certain camels, one hump (H) is dominant over two humps (h) while long necks (N) are dominant over short necks (n). Cross a camel that is heterozygous for both traits with a camel that is homozygous recessive for hump & heterozygous for the neck.

What is the probability for an offspring to be homozygous recessive for both traits? [Answer in fraction]

(a)  

Tags

NGSS.HS-LS3-3

A male alligator has the genotype RrAa. If this alligator mates with a female with genotype RrAa, what is the chance their offspring will have the genotype rrAa? [Type the answer in fraction]

(a)  

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-1

Cross Two Homozygous plants

(RrYy x rrYy)

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

What is the probability for an offspring to have Wrinkled and Green seeds? [Answer in fraction]

(a)  

Tags

NGSS.HS-LS3-3

What goes in box 3

• Aabb
• AABB
• AAbb
• aaBb

What goes in box 15

• aabb

• AABB

• aaBB

• AAbb

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

• Ry
• RRyy
• RrYy
• Rryy