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NEET2004ZoologyPrinciples of Inheritance and VariationActual

A self-fertilizing trihybrid plant forms:

Options

  1. A8 different gametes and 64 different zygotes
  2. B4 different gametes and 16 different zygotes
  3. C8 different gametes and 16 different zygotes
  4. D8 different gametes and 32 different zygotes.

Correct answer

A. 8 different gametes and 64 different zygotes

Step-by-step solution

The genotype of trihybrid would be AaBbCc . Number of gametes = (no. of genes studied) ^n Where n= no. of heterozygous alleles Thus, Number of gametes =(2)^3=8 No. of Zygotes =(2)^ 2 n =(2)^ 2 3 =(2)^6=64

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