In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents?

Human Anatomy & Physiology (11th Edition)
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In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents?

a.

Dd Pp x Dd pp

 
  b.

DD Pp x dd pp

 
  c.

DD Pp x dd Pp

 
  d.

Dd Pp x Dd Pp

 
  e.

Dd pp x dd Pp

Expert Solution
Step 1

Dominant allele 

The allele which mask or override the character of other gene which present in the sister chromatids. 

 

Recessive allele 

This allele only shows its character when both sisters chromatids have recessive gene. 

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