Friday, October 28, 2011

Blog 11 due 10/31 10:00 am

In sweet peas, purple flower color (P) is dominant over white (p), but there is also a control gene such that if the plant has a “C”, the purple has “permission” to express itself. If the plant is “cc,” the purple does not “have permission” to express itself and the flower will be white anyway. If a plant with homozygous purple, controlled flowers is crossed with a plant with white, non-controlled flowers, calculate the genotype and phenotype ratios of the F1 and F2 generations.

9 comments:

  1. PPCC x ppcc
    F1:genotype-PpCc phenotype-purple

    PpCc x PpCc
    F2:genotype:
    PPCC-1
    PPCc-2
    PpCC-2
    PpCc-4
    PPcc-1
    Ppcc-2
    ppCC-1
    ppCc-2
    ppcc-1
    phenotype:Purple-9 White-7

    ReplyDelete
  2. PPCCxPpCc
    F1
    Genotype: PpCc
    Phenotype: purple
    F2
    PpCcxPpcc
    Genotype:
    1 PPCC
    2 PpCC
    1 ppCC
    2 PPCc
    4 PpCc
    2 ppCc
    1 PPcc
    2 Ppcc
    1 ppcc
    Phenotype:
    9 Purple
    7 White

    ReplyDelete
  3. PPCC x PpCc
    F1:
    Genotype: PpCc
    Phenotype: Purple
    F2:
    PpCcxPpCc
    Genotype:
    PPCC - 1
    PpCC - 2
    ppCC - 1
    PPCc - 2
    PpCc - 4
    ppCc - 2
    PPcc - 1
    Ppcc - 2
    ppcc - 1
    Phenotype:
    9 Purple
    7 White

    ReplyDelete
  4. PPcc x ppCC

    F1 Genotype- PpCc
    Ratio- 1:0:0:0:0:0:0:0:0
    F1 Phenotype- Purple
    Ratio- 1:0

    PpCc x PpCc

    F2 Genotypes:
    PPCC- 1
    PPCc- 2
    PPcc- 1
    PpCC- 2
    PpCc- 4
    Ppcc- 2
    ppCC- 1
    ppCc- 2
    ppcc- 1
    Ratio: 1:2:1:2:4:2:1:2:1
    Phenotypes: Purple (9) White (7)
    Ratio: 9:7

    ReplyDelete
  5. PPCC x ppcc
    F1- PpCc purple controlled flowers.
    F2- PpCc x PpCc

    1/16 PPCC
    2/16 PpCC
    1/16 ppCC
    2/16 PPCc
    4/16 PpCc
    2/16 ppCc
    1/16 PPcc
    2/16 Ppcc
    1/16 ppcc

    9 purple flowers
    7 white flowers

    ReplyDelete
  6. F1 Generation
    PPcc x ppCC

    Genotype- All PpCc
    Ratio- 1:0
    Phenotype- All Purple
    Ratio- 1:0

    F2 Generation
    PpCc x PpCc

    Genotypes:
    PPCC- 1
    PPCc- 2
    PPcc- 1

    PpCC- 2
    PpCc- 4
    Ppcc- 2

    ppCC- 1
    ppCc- 2
    ppcc- 1

    Ratio: 1:2:1:2:4:2:1:2:1
    Phenotypes: Nine Purple Seven White
    Ratio: 9:7

    ReplyDelete
  7. F1 Generation= PPcc x ppCC
    Genotype- PpCc
    Phenotype- 100 % Purple

    F2 Generation=PpCc x PpCc
    Genotypes:
    PPCC- 1
    PPCc- 2
    PPcc- 1

    PpCC- 2
    PpCc- 4
    Ppcc- 2

    ppCC- 1
    ppCc- 2
    ppcc- 1

    Phenotypes:
    9 Purple
    7 White

    ReplyDelete
  8. F1 Generation
    PPcc x ppCC

    Genotype- All PpCc
    Ratio- 100%
    Phenotype- All Purple
    Ratio- 100%

    F2 Generation

    PpCc x PpCc

    Genotypes:
    PPCC- 1
    PPCc- 2
    PPcc- 1

    PpCC- 2
    PpCc- 4
    Ppcc- 2

    ppCC- 1
    ppCc- 2
    ppcc- 1

    Phenotypes:
    9 Purple
    7 White

    ReplyDelete
  9. f1 generation: PPcc x ppCC

    genotype - PpCc
    ratio- 100%
    phenotype- purple
    patio- 100%

    f2 generation: PpCc x PpCc

    genotypes:

    PPCC - 1
    PPCc - 2
    PPcc - 1

    PpCC - 2
    PpCc - 4
    Ppcc - 2

    ppCC - 1
    ppCc - 2
    ppcc - 1

    phenotypes:
    7 white
    9 purple

    ReplyDelete