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how do you get to zero

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Which of the following is not a subset of {1,2,3}?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?