The source of genetic variation that occurs during meiosis and results in new combinations of alleles is known as
genetic drift
genetic recombination
natural selection
gene flow

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

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

In which part of the body is a ball-and-socket joint found?