0
Dorcas Hauck ∙
The trait that can not be seen is recessive to the one that is dominant.
an organism that can reproduce itself in a host
spinal cord
Rabies, chickenpox, and influenza are viral. Heart disease may or may not be caused by a virus.
true a+
Theoretical probability.
sensory receptors
Definition: The average number of people living in a square mile or square kilometer.Population density refers to the number of people per unit area.