Curly tailed/Straight tailed Pigs

Cross two heterozygous curly tailed pigs.

C - curly tailed

c - straight tailed

Question at position 24
24

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1 point



Question at position 24
Fill in the blanks that correspond with the missing information in the punnett square.



1.
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; 2.
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; 3.
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; 4.
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; 5.
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; 6.
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; 7.
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; 8.
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Question at position 25
25

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1 point



Question at position 25
What is the ratio of possible phenotypes of the F1 generation? (enter numeric answer only)

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curly :
Question Blank 2 of 2
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straight
Question at position 26
26

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1 point



Question at position 26
What is the ratio of possible genotypes of the F1 generation? (enter numeric answer only)

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CC :
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Cc :
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cc
Question at position 27
27

Numeric
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Question at position 27
How many were homozygous recessive? (enter numeric answer only)

How many were homozygous recessive? (enter numeric answer only)

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Question at position 28
28

Multiple Choice
1 point



Question at position 28

What is the probability that their next offspring will have straight tails?

What is the probability that their next offspring will have straight tails?

1/4

1/2

3/4

0/4

1 answer

To answer your questions, let's start by crossbreeding two heterozygous curly-tailed pigs (Cc x Cc).

  1. Punnett Square Analysis:

    • Gametes: C (curly) and c (straight)

    Creating a Punnett Square:

             C         c
         -----------------
       |    CC    |   Cc   |
    C  |----------|---------|
       |    Cc    |   cc   |
         -----------------
    
    • From the Punnett Square, we find:
      • 1 CC (homozygous dominant)
      • 2 Cc (heterozygous)
      • 1 cc (homozygous recessive)
  2. Fill in the Blanks for the Punnett Square:

      1. CC
      1. Cc
      1. Cc
      1. cc
      1. C
      1. c
      1. C
      1. c
  3. Phenotypic Ratio of the F1 Generation:

    • Curly tails (CC + Cc) = 3
    • Straight tails (cc) = 1

    Therefore, the ratio is:

    • 3 curly : 1 straight.
  4. Fill in the Ratio of Possible Phenotypes:

    • Question Blank 1: 3
    • Question Blank 2: 1
  5. Genotypic Ratio of the F1 Generation:

    • Homozygous dominant (CC) = 1
    • Heterozygous (Cc) = 2
    • Homozygous recessive (cc) = 1

    Thus, the genotypic ratio is:

    • 1 CC : 2 Cc : 1 cc.
  6. Fill in the Ratio of Possible Genotypes:

    • Question Blank 1: 1
    • Question Blank 2: 2
    • Question Blank 3: 1
  7. Homozygous Recessive Count:

    • From the Punnett Square, the number of homozygous recessive (cc) is 1.
  8. Probability of Next Offspring Having Straight Tails:

    • The probability of having straight tails (cc) is 1/4.

To summarize the answers:

  • Fill in the Blanks:

    1. CC
    2. Cc
    3. Cc
    4. cc
    5. C
    6. c
    7. C
    8. c
  • Phenotypic Ratio:

    • Question Blank 1: 3
    • Question Blank 2: 1
  • Genotypic Ratio:

    • Question Blank 1: 1
    • Question Blank 2: 2
    • Question Blank 3: 1
  • Homozygous Recessive Count:

    • Answer: 1
  • Probability of Straight Tails:

    • Answer: 1/4