Question

1. both fred and ed have a bag of candy containing a lemon drop, a cherry drop, and a lollipop. each takes out a piece and eats it. what are the possible pairs of candies eaten?

a) ld-cd ld-cd ld-cd ld-lp ld-lp ld-lp cd-lp cd-lp cd-lp
b) cd-ld ld-lp lp-cd lp-lp ld-ld
c) ld-ld cd-ld lp-lp ld-lp cd-cd ld-lp lp-cd cd-ld lp-ld
d) ld-ld cd-ld lp-lp ld-cd cd-cd ld-lp lp-cd cd-lp lp-ld

1. two white mice mate. the male has both a white and a black fur-color gene. the female has only white fur-color genes. the fur color of the offspring depends on the pairs of fur-color genes that they receive. assume that neither the white nor the black gene dominates. list the possible outcomes.

a) ww, bw
b) ww, bb
c) ww, ww
d) wb, bw

Explanation:

Question 15

Step1: Identify Fred's and Ed's candies

Fred and Ed each have 3 candies: lemon drop (LD), cherry drop (CD), lollipop (LP). So each can choose LD, CD, or LP.

Step2: List all possible pairs

For Fred's choice (first in pair) and Ed's choice (second in pair), the possible pairs are:

• Fred picks LD: Ed can pick LD (LD - LD), CD (LD - CD), LP (LD - LP)
• Fred picks CD: Ed can pick LD (CD - LD), CD (CD - CD), LP (CD - LP)
• Fred picks LP: Ed can pick LD (LP - LD), CD (LP - CD), LP (LP - LP)

Combining these, the pairs are LD - LD, CD - LD, LP - LP, LD - CD, CD - CD, LD - LP, LP - CD, CD - LP, LP - LD, which matches option D.

Step1: Determine genes of male and female

Male has genes: W (white) and B (black) (so his gene pairs for contribution: W or B). Female has genes: W and W (so her gene pairs for contribution: W or W).

Step2: Find possible offspring gene pairs

When male contributes W and female contributes W: WW.
When male contributes B and female contributes W: BW.
So possible outcomes are WW and BW, which is option A.

Answer:

D. LD-LD CD-LD LP-LP LD-CD CD-CD LD-LP LP-CD CD-LP LP-LD

Question 16