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1861 Words Nov 12th, 2014 8 Pages
Homologous Chromosomes and Sister Chromatids (HC and SC): Clearly distinguish between HC and SC pairs. Your answer should include the following: a clear distinction between ‘chromatin’ and ‘chromosome’, and how this difference affects gene expression; simple line diagrams to illustrate the difference between non-replicated and replicated DNA inchromatin and chromosome forms; afull description of both HC and SC with a labeled diagram that includes gene/allele sequences for a heterozygote and ‘m’ or ‘p’ labels to indicate parental origin; a definition of diploid and haploid cells in terms of HC content; an explanation of the stage of the organism’s life cycle at which the HCfirst come into existence(I am NOT asking for when they are …show more content…
Use your diagrams to clearly indicate any transitions between chromatin and chromosome forms, any replication or separation of identical copies, and any pairing or separation of HC in the course of the cycle. Use labeled arrows between drawings to indicate the phase of the cell cycle at which each transition you indicate takes place.
How many cells are produced by meiosis of one starting cell?
Explain the terms ‘diploid’ and ‘haploid’, by answering the bullets below
Describe the essential differences between diploid cells and haploid cells. (How would you recognize one vs. the other?)
At what phase of which meiotic division are haploid cells first present?
How do the unique events of meiosis bring this about? [Please do not list all of the events of meiosis; pinpoint the 2-3 key events, only, and explain when each occurs and how each contributes to the formation of a haploid cell.]
Why is the formation of haploid cells important to the species?
In which organ of the human male does meiosis occur? In which organ of the human female does it occur? What kind of cell is produced by meiosis in each gender?
What event is necessary for diploidy to be restored?
List and briefly explain the three ways in which sexual reproduction brings about genetic variation in offspring, as presented in class. Include some specific numbers describing the level of genetic variation in humans from each of these events.

meiosis is a part of the sexual reproduction that

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