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How do gene frequency and adaptations relate to one another?

A)If a trait is determined to help an organism survive, then the number of chromosomes in organisms will increase in number and frequency.

B) If a trait is determined not to help organisms survive, then the trait would increase in gene frequency in the population.

C) If a trait is determined to help organisms survive, then that trait would increase in gene frequency in the population.

D) There is no known relationship between gene frequency and adaptations