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Unformatted text preview: then divide into two cells with equal amounts of DNA and organelles. However, instead of stopping there, the two cells then divide without replicating DNA, resulting in 4 cells that are haploid. During sexual reproduction, two haploid cells, one from each parent organism, must join during fertilization. When fertilization occurs, the DNA from each haploid cell joins to form a diploid cell. Mitosis then causes the cell to divide and increase in cell number as the fetus grows. Without meiosis, sexual reproduction would rarely occur, as it is the main tool that plants and animals use in order to produce offspring and to introduce genetic variability to the offspring. Asexual reproduction does occur and does result in offspring, but the offspring are exact copies of the parent and there is no genetic variability, which can be detrimental in the long run...
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- Spring '11