9 Most cells in the body of a fruit fly contain eight
chromosomes. How many of these chromosomes
were contributed by each parent of the fruit fly?
(1) 8
(2) 2
(3) 16 (4) 4
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4) 4

Explanation: Sexual reproduction is a type of reproduction in which offspring is produced by the mating of male organism with female organism. In sexual reproduction, half genes come from male and other half comes from female organism producing a diploid zygote having double number of chromosomes. So in fruit fly, parents have eight chromosomes so 4 chromosomes comes from each organism.

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pesticide