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BSCI 105 Lecture Notes - Lecture 12: Point Mutation, Cyclin-Dependent Kinase 1, Cyclin A

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School
University of Maryland
Department
Biological Sciences Program
Course
BSCI 105
Professor
Patricia Shields

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Document Summary

Mitosis and meiosis are the cell division processes used by eukaryotic organisms because there is so much genetic information in eukaryotes. Nuclear division: mitosis, meiosis (covered in bsci106) Mitosis: separation of chromosomes during cell division in which two cells are produced, each genetically identical to the other and to the parental cell (haploid or diploid. Meiosis: a type of nuclear division that produces a new combination of chromosomes and genes, packaged in nuclei containing only half of the number of chromosomes found in the parental cell (diploid only) A controlled sequences of events in which a cell grows larger, then divides to form two smaller and. The point of mitosis is to make two identical daughter cells. Cycle must be complete at the right time and in the appropriate sequence. Each phase has to be completes before the next one is started. Cell has to be able to respond to external factors.

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Related Questions

Indicate whether the following outcomes of cell division are observed in mitosis only, meiosis only, or both mitosis and meiosis. Sister chromatids are separated. mitosis only meiosis only both mitosis and meiosos Contains only one cellular division mitosis only both mitosis and meiosos meiosis only DNA is replicated prior to cell division. both mitosis and meiosos mitosis only meiosis only A diploid parent cell produces haploid daughter cells. mitosis only both mitosis and meiosos meiosis only Daughter cells are genetically identical to parent cell. meiosis only

1. only one chromosome of a homologous pair is present in a cell

2. sister chromatids seperate

3. homologous chromosomes pair up

4. parent cell and daughter cells are genetically identical to each other

5. chromosomes replicate before nuclear division

6. crossing over

7. involved in growth and repair

8. homologous chromosomes separate

9. synthesis of sister chromatids before division

10. independent assortment

Answer Choices:

A. occurs ONLY in meiosis

B. occurs in BOTH mitosis and meiosis

C. occurs ONLY in mitosis

Which of the following statements are false about the comparison between mitosis and meiosis? Select all. that apply.

1.Two cytokinesis events occur in mitosis but only one in meiosis

2.Meiosis results in half the number of homologous chromosome pairs as the original cell whereas mitosis has the same number as the original cell

3. Mitosis occurs in somatic cells while meiosis only occurs in germ cells

4.Both haploid and diploid cells undergo mitosis and meiosis

5.Both mitosis and meiosis have one round of DNA replication in the preceding Interphase period

6. Chromosomes undergo disjunction in mitosis but not in meiosis

7.Meiosis leads to a reductive division in the number of chromosomes whereas mitosis does not

Thank you!