Scrape the minerals against the streak plate. Record the color of the minerals' streaks in the Student Guide. ?
MINERAL SAMPLES
WHITE STREAK PLATE
Mineral 1 (2) Mineral 2 (2)
Mineral 3 (2) Mineral 4 (3)
Mineral 5 (3) Mineral 6 (2)
Clear

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.