The ONLY way a new allele can enter a population is

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Describe two recent or ongoing space missions.