To be able to compare the results to a sample without any of the independent variable added.
Answer:
plant organisms can alternate between diploid sporophyte and haploid gametophyte phases.
Explanation:
Once mature, the gametophyte produces male and female gametes. When haploid gametes unite, they form a diploid zygote. The zygote grows via mitosis to form a new diploid sporophyte,Thus unlike in animals.
Cells with the full set of chromosomes are
diploid somatic cells.
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