In what type of organism is cell differentiation necessary?
A. prokaryotes
B. kingdom archaebacteria
C. single-celled organisms
D. multi-cellular organisms

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

The cluster of developing cells from conception until birth is called an

Which of these parts of the membrane large moecules pass through it ?