Question

table 5.2: compare and contrast mitosis and meiosis. (see lab manual text section ii.a. and also iii.b., plus mitosis information in section i.)

	mitosis	meiosis
2. are the cell types produced genetically identical to or different from the parent cell?
3. how many daughter cells are produced from one parent cell?
4. is it a reductional or an equational division process?
5. name which process goes from 2n to 2n, and which goes from 2n to n.
6. what is the number of divisions for each process
7. indicate whether or not crossing over occurs (yes or no)

Explanation:

1. Mitosis occurs in somatic cells for growth and repair. Meiosis occurs in germ - line cells for gamete formation.
2. Mitosis produces genetically identical daughter cells. Meiosis produces genetically different daughter cells due to crossing - over and independent assortment.
3. Mitosis results in 2 daughter cells from one parent cell. Meiosis results in 4 daughter cells from one parent cell.
4. Mitosis is an equational division as the chromosome number remains the same. Meiosis is a reductional division as the chromosome number is halved.
5. Mitosis goes from 2N to 2N. Meiosis goes from 2N to N.
6. Mitosis has 1 division. Meiosis has 2 divisions (meiosis I and meiosis II).
7. Crossing - over occurs in meiosis during prophase I, but not in mitosis.

Answer:

	MITOSIS	MEIOSIS
2. Are the cell types produced GENETICALLY IDENTICAL to or DIFFERENT from the parent cell?	Genetically identical	Genetically different
3. HOW MANY daughter cells are produced from one parent cell?	2	4
4. Is it a REDUCTIONAL or an EQUATIONAL division process?	Equational	Reductional
5. Name which process goes from 2N TO 2N, and which goes from 2N TO N.	Mitosis goes from 2N to 2N	Meiosis goes from 2N to N
6. What is the NUMBER of divisions for each process	1	2
7. Indicate whether or not CROSSING OVER occurs (yes or no)	No	Yes