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  1. A self-fertilizing trihybrid plant forms
    1. 8 different gametes and 64 different zygotes
    2. 4 different gametes and 16 different zygotes
    3. 8 different gametes and 16 different zygotes
    4. 8 different gametes and 32 different zygotes
Correct Option: A

A self-fertilizing trihybrid plant forms 8 different gametes and 64 different zygotes.
The genotype of trihybrid plant is AaBbCc.
Number of gametes formed = 2n = 23 = 8
Here n = no. of heterozygosity = 3 in present case.
No. of zygotes formed = 82 = 64.



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