You study corn and find it shows the same response as arabidopsis plants. which of the following did you observe? a. as less phosphate is available, corn shows a decreased immune response. b. phosphate availability has an unknown link to immune response. c. phosphate availability is not tied to the immune response. d. as less phosphate is available, corn shows an increased immune response.

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.