Question

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:

Answer 1

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