Crossing over occurs between: a. sister chromatids is the same chromosome b. two different kinds of tetrads c. two different kinds of chromosomes d. non sister chromatids of a tetrad e. two daughter nuclei

crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At that stage each chromosome has replicated into two strands called sister chromatids.

i think that the best answer would be c.

tell me if im wrong : )

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///