CORE LAB

1. What would happen if the sperm could not get into the egg?
2. How do organisms develop from the size of a sperm and egg to an adult? What directs these changes?
3. Why is there such a difference in the size of the egg and the sperm?
4. Water currents in the ocean are much stronger than any sperm. How do sperm and egg find each other?
5. Why do sea urchins have external fertilization? What are the adaptive advantages of external fertilization? What are the adaptive advantages of internal fertilization?
6. What would happen if one cell was removed or damaged at the 2 cell, 4 cell, 8 cell stage?
7. What would happen if the two cells were separated after the first cleavage and allowed to develop on their own?
8. Why do cells with multiple chromosomes need the complex steps of mitosis to divide in comparison to the steps of binary fission in bacteria?