Discussion Question 1 Question 1 Significance of differences

Discussion Question 1

Question 1: Significance of differences between mitosis and meiosis

Mitosis and meiosis are the two major processes by which eukaryotic cells reproduce.

*Compare and contrast the processes of mitosis and meiosis.

*Consider the stages involved in each and their eventual products.

*How are the differences biologically significant relative to growth and reproduction?

Be prepared to discuss how life is dependent upon both types of cellular reproduction.

Answer all questions please.

Discussion Question 1

Solution

Mitosis Meiosis DNA replication occurs before mitosis, during interphase occurs before meiosis, during interphase Divisions one division, equational division, number of chromosomes stays the same two divisions, reduction division, number of chromosomes get reduced to half recombination during prophase no crossing over, chiasmata formation and synapsis during prophase crossing over, chiasmata formation and synapsis which results in recombinations during prophase I role cell division, leads to growth of the body and repair of the cells. reproductive gamete production ploidity diploid parental cell divides to give diploid daughter cells which are genetically similar diploid parental cell undergoes division to give four haploid daughter cells, which are genetically different from the parental cells metaphase chromosomes arrange along the equator, centromeres towards equator and chromatids towards poles chromosomes arrange equally on either side of the equator during metaphase I, centromeres towards poles and chromatids towards equator get arranged anaphase centromere splits into two during anaphase, chromosomes move to opposite poles of the spindle centromeres do not split Telophase formation of two daughter nuclei, having same number of chromosomes as that of parental cell Telophase II leads to formation of two daughter nuclei with half the number of chromosomes of the parental cell cytokinesis follows immediately after the karyokinesis during cell division may or may not occur at the end of first karyokinesis during meiotic cell division