The chromosome ploidy number changes from 2n to 1n during:

In the practice of science, this type of reasoning is used to develop explanations.

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

Isotopes of the same element have differ in their