Crossing over is one of the most important events in meiosis because?
it produces new combinations of alleles on chromosomes. homologous chromosomes must be separated into different daughter cells. the number of chromosomes allotted to each daughter cell must be halved. homologous chromatids must be separated into different daughter cells. all of these reasons are true.

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables