Yes, that is true. However, a penis can temporarily enlarge from blood flow (an erection) or it can be surgically manipulated. Hope that helps!
A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.
The answer is 4 gametes that have the number of chromosomes....
