In an organism with a diploid chromosome number of 2n4 assu

In an organism with a diploid chromosome number of 2n=4 , assuming no crossing over, after meiosis: 1)How many genetically different gametes could be formed? 2)How many genetically different zygotes could be formed following the fertilization? 3)Answer 1) and 2) if 2n=6

Solution

1)

The diploid chromosome number of organism = 2n = 4

Number of genetically different gametes = 2⁴ = 2 x 2 x 2 x 2 = 16

2)

Since, the zygote is diploid, the organism produces 4 genetically different zygotes after fertilization.

3)

When the diploid chromosome number of organism is 2n = 6, the number of different gametes formed are 2⁶ or 64. The number of genetically different zygotes are 6.