has four pairs of chromosomes what proportion of gametes would be expected to contain some chromosomes from both parental and maternal origin? assume that there is no crossing over

To complete the question: a diploid organism has four pairs of chromosomes what proportion of gametes would be expected to contain some chromosomes from both parental and maternal origin? assume that there is no crossing over

7/8

Explanation:

A diploid organism with four pairs of chromosomes...

Assume that the organism receives chromosomes A, B, C and D from the female parent and A', B', C' and D' from the male parent.

Proportion of gametes from patterns origin is the same as that of matters origin, this we have:

(1/2)^4 = 1/16 where 4 reps the number of possibilities, 1/2 rep the chance

Thus, the proportion of gametes expected to contain some chromosomes from both parental and maternal origin would be

(1 - (1/16 + 1/16)) = 14/16 = 7/8

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