Question at position 18

18

Multiple Choice
1 point



Question at position 18

What percent of the F1 generation were short?

What percent of the F1 generation were short?

0%

25%

50%

75%

Stimulus for questions at positions: 19, 20, 21, 22, 23
The following text applies to the questions at positions 19, 20, 21, 22, 23
Big-footed/Small-footed Turtle
Cross a heterozygous big-footed turtle with a small-footed turtle.

B - big-footed

b - small-footed

Question at position 19
19

Fill in the Blank
1 point



Question at position 19
Fill in the blanks that correspond with the missing information in the punnett square. (Heterozygous big-footed turtle goes on top, small-footed turtle goes on the left side)



1.
Question Blank 1 of 8
B
; 2.
Question Blank 2 of 8
b
; 3.
Question Blank 3 of 8
B
; 4.
Question Blank 4 of 8
b
; 5.
Question Blank 5 of 8
Bb
; 6.
Question Blank 6 of 8
bb
; 7.
Question Blank 7 of 8
Bb
; 8.
Question Blank 8 of 8
bb
Question at position 20
20

Fill in the Blank
1 point



Question at position 20
What is the ratio of possible phenotypes of the F1 generation? (enter numeric answer only)

Question Blank 1 of 2
1
big-footed :
Question Blank 2 of 2
1
small-footed
Question at position 21
21

Fill in the Blank
1 point



Question at position 21
What is the ratio of possible genotypes of the F1 generation? (enter numeric answer only)

0
Question Blank 1 of 3
type your answer...
: 2
Question Blank 2 of 3
type your answer...
: 2
Question Blank 3 of 3
type your answer...
Question at position 22
22

Fill in the Blank
1 point



Question at position 22
What is the genotype in the lower right hand quadrant?

Question Blank 1 of 1
type your answer...
Question at position 23
23

Multiple Choice
1 point



Question at position 23

What is the probability that their next offspring will have big feet?

What is the probability that their next offspring will have big feet?

1/4

1/2

3/4

0/4

1 answer

Let's address each of the questions step by step based on the information provided regarding the big-footed/small-footed turtle cross.

Question 18

What percent of the F1 generation were short? In the cross of a heterozygous big-footed turtle (Bb) with a small-footed turtle (bb), the resulting offspring phenotypes will be 50% big-footed (Bb) and 50% small-footed (bb).

Answer: 50%


Question 19

Fill in the blanks that correspond with the missing information in the Punnett square.

When we cross Bb (top row) with bb (left column), we get:

  • 1st Row: Bb, Bb
  • 2nd Row: bb, bb

The filled blanks according to this would be:

  1. B
  2. b
  3. B
  4. b
  5. Bb
  6. bb
  7. Bb
  8. bb

Question 20

What is the ratio of possible phenotypes of the F1 generation?

From the Punnett square:

  • 2 big-footed (Bb)
  • 2 small-footed (bb)

The ratio of big-footed to small-footed is 2:2, which simplifies to 1:1.

Answer: 1 big-footed : 1 small-footed


Question 21

What is the ratio of possible genotypes of the F1 generation?

Again from the Punnett square:

  • 2 Bb (heterozygous big-footed)
  • 2 bb (homozygous small-footed)

The ratios of genotypes would be:

  • 2 Bb: 2 bb This simplifies to 1 Bb : 1 bb.

Answer: 1 : 1


Question 22

What is the genotype in the lower right hand quadrant?

The lower right-hand quadrant of the Punnett square corresponds to the combination of b (from the small-footed turtle) with b (from the small-footed turtle), which results in:

Answer: bb


Question 23

What is the probability that their next offspring will have big feet?

The offspring's genotypes will be:

  • 2 Bb (big-footed)
  • 2 bb (small-footed)

Thus, the probability of having big feet (Bb) is 2 out of 4, which simplifies to 1/2.

Answer: 1/2