What is the role of restriction enzymes in studying the human genome?
a. copying pieces of DNA
b. labeling different nucleotides with different colors of dyes
c. separating different pieces of DNA based on their size
d. cutting large DNA molecules into smaller pieces

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.