In order for the results of the experiment to be valid which of the following factors must be held constant for all trails

Individuals do not compete directly for resources, but are prey for the same predator

Pink fur (p) is dominant to purple fur (p) in hamsters. two heterozygous pink hamsters are crossed. what is the probability that these two parents will have an offspring with purple fur? 2/4, 1/2 or 50% 1/4 or 25% 3/4 or 75% 4/4 or 100% there is no chance for this type of offspring

Match each symbol with its description.