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Example #2: In peas, purple flowers are dominant to white and tall are

dominant to short. A white and short plant is crossed with a plant that is

heterozygous for both traits. Determine the phenotypic ratio.

Mother-

Father-

1. Write genotypes:

2. Sort the alleles (FOIL):

3. Write these combinations on sides.

4. Combine the letters.

5. Phenotypic ratio:

Respuesta :

PokeyAnna

For my answer:

P = purple

p = white

T = tall

t = short

-----------------------

1. white and short  x  heterozygous

pptt x PpTt

2. pt, pt, pt, pt  &  PT, Pt, pT, pt

3. just write them along a 4 by 4 table :)

4.    PT    Pt    pT     pt

pt

pt

pt

pt

PpTt    Pptt    ppTt    pptt

PpTt    Pptt    ppTt    pptt

PpTt    Pptt    ppTt    pptt

PpTt    Pptt    ppTt    pptt

5.

purple & tall: 4/16

purple & short: 4/16

white & tall: 4/16

white & short: 4/16

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