Question

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Which process represents cellular division in body cells?
Which process is necessary for sexual reproduction?
How does sexual reproduction increase genetic variation?
Summarize the differences between mitosis and meiosis.

Answer 1

Answer 1: Mitotic cell division


That would include both mitosis and cytokinesis. Mitosis alone is a form of nuclear division, and does not include division of the cell. That's where cytokinesis would come in ... without it, there isn't cell division.

If you are asking about a continual process, then that would be the cell cycle, which includes interphase and the mitotic phase (with the mitotic phase consisting of mitosis and cytokinesis).


Answer 2: Meiosis is necessary for sexual reproduction.
Two cells combine during the process of sexual reproduction. One of the cells contains genetic information from the mother. The other contains genetic information from the father. The two cells combine into a completely new cell, which becomes the offspring.

Answer 3: The process of sexual reproduction involves two parents, each contributing one gamete. Gametes are produced
by a process called meiosis, which starts by the duplication of the chromosomes, followed by two rounds of cell divisions and halving of the chromosome number. Gametes have half the chromosome number of other adult
cells of an organism.
A key feature of meiosis is the exchange of chromosome pieces which occurs in the first division of this process, called recombination or crossing over. Recombination is a very important source of genetic variation between individuals of sexually reproducing species, and the driving force for the process of natural selection. (The file attached explains it diagrammatically)

Answer 2

Answer 4:
http://www.majordifferences.com/2013/07/difference-between-mitosis-and-meiosis.html