In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Q: The earliest clear statement of how chromosomes may spread in a population not because of their positive fitness effects on the individual organism , but because of their own " parasitic " nature came from the Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 .

A: The Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 noted how chromosomes may spread in a population because of their own ” parasitic ” nature .
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Q: Although the French troops would have a higher proportion of motorised units than their German adversaries , in view of the respective distances to be covered , they could not hope to reach their assigned sector advancing in battle deployment before the enemy did .

A: Although the French troops would have more motorised units than the Germans , they could not hope to reach their places in the battle before the enemy did .
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Q: A hard disk drive ( HDD ) , hard disk , hard drive , or fixed disk is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks ( platters ) coated with magnetic material .

A:
A hard disk drive ( HDD ) , hard disk or hard drive , is a data storage device for computers which uses magnetic storage to store data .
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