Could y'all help me get 19 groups of 2 Biological, and Geological events?(you don't have to get all of them at least some please, will give 50 points and brainlest).

Construct at least two possible hypotheses for the student’s experiment.

Where does the information about where each transcription factor binds originate?

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.