Question

If plants with genotype YyXx and yyxx are

crossed with each other then what percentage of

progenies produced​

Answer 1

When plants of genotype YyXx  is crossed with xxyy the ratio of progeny produced is 9:3:3:1.

Explanation:

• When plants of genotype YyXx is crossed with xxyy, the Dihybrid cross (cross of two characters) produces 16 progeny plants.
• Herein Y represents one character and X represents another trait.
• The YyXx is heterozygous for the traits it represents and xxyy is homozygous recessive.
• Assuming Y represents color of the seed and X represents smooth seed. Yellow is the dominant color and smooth seed are the dominant traits. While green and wrinkled seed is recessive trait.
• The heterozygous genotype YyXx phenotypically is Yellow smooth seed. The genotype yyxx is a green wrinkled seed.
• When crossed they produce 16 progeny out of which 9 are yellow smooth seeds, 3 are yellow wrinkled seeds, 3 are green smooth seeds and 1 is green wrinkled seed.