In a population of worms, the coloration of all individuals has been the same brown color for many generations. Last year, a worm was born with white coloration. The worm then produced several white offspring. The resulting change in the population was caused by *

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i think its the first one

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.