Biology Unit 3

2. : uncontrollable cell growth when cells no longer respond to cyclins.
3. : describes having only 1 chromosome for each trait- half the number of chromosomes(n).
6. : 2nd stage of mitosis- centrioles line up chromosomes along the middle of the cell.
8. : describes having 2 equivalent chromosomes for each trait- 1 inherited from each parent(2n).
9. : 4th stage of mitosis- nuclear membrane reforms, chromosomes uncondense, centrioles disappear.
11. : a regular chromosome-22 pair in humans.
14. : a series of stages in cells move through as they grow, develop, and divide.
16. : a type of reproduction- creates a clone of a single parent.
17. : exact copies of the same genetic material- attached at the centrome, make up a chromosome.
18. : normal diploid body cell.
19. : a protein that regulates the cell cycle- can be external or internal.
20. : 2nd division of meiosis- separates sister chromatids.

1. : 3rd stage of mitosis-centrioles separate sister chromatids to opposite ends of the cell.
4. : 1st stage of mitosis- chromosomes condense, nuclear membrane breaks down, centrioles appear.
5. : stage of the developing embryo classified as a hollow ball of cells.
7. : chromosome/nuclear division in somatic cells- makes 2 identical diploid daughter cells.
10. : 1st division of meiosis- separates homologous chromosomes.
12. : type of reproduction- creates unique offspring from 2 parents.
13. : first cell of a new organism, created when a sperm fertilizes an egg.
15. : a stage of the developing embryo classified as a hollow ball of cells folded in on itself.