Aman and a woman marry and have four children with the following blood types: Type A, Type B, Type AB, and Type O. What are the genotypes of the parents? Hint: work the problem backwards

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

2. which is the last step in the scientific method?