BIOLOGY 172 Lecture Notes - Lecture 26: Cleavage Furrow, Photobleaching, Golgi Apparatus

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purplebeaver856

15 Oct 2016

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You must first duplicate everything and then the cell will divide. If one cell is considered the whole organism, then cell division is the production of a new cell. We use mitosis and cell cycle for growth. Lots of mitotic division leads to a fully grown human. Step 1: duplicate everything, including dna (goes for both mitosis and meiosis) It starts of with 2 chromosomes with each being a double stranded dna. The dna is then replicated to form sister chromatids. In mitosis, the chromosomes line up in the middle of the cell and the sister chromatids are separated. So each daughter cell (the new cell after division) will have the same chromosome and the same amount of it. Mitosis generates the exact replica of the cell (in terms of dna) In the first division, rather than the sister chromatids separating, we separate homolongs (basically we separate the two different pairs of sister chromatids)

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

apricotsquirrel147

Determine if the following events occur during Mitosis, Meiosis I, Meiosis II, Mitosis and Meiosis, Mitosis and Meiosis I, or Mitosis and Meiosis II. (Answers may be used once, more than once or not at all. Be as accurate as possible with your answer.)

___ 1. The chromosome number is reduced by half.

___ 2. The amount of DNA in the cell is twice the amount of a normal diploid cell in G1.

___ 3. DNA is replicated during S phase.

___ 4. Homologous chromosomes separate.

___ 5. Sister chromatids separate.

___ 6. Chromosomes condense and align along the metaphase plate.

___ 7. Homologous chromosomes align and undergo crossing over.

___ 8. Has one round of division per round of DNA replication.

___ 9. The number of chromatids is equal to the number of chromosomes of a diploid cell in G1.

___ 10. Tetrads align on the metaphase plate.

a. Mitosis and Meiosis I only

b. Both Mitosis and Meiosis

c. Meiosis II only

d. Mitosis and Meiosis II only

e. Mitosis only

f. Meiosis I only

coppercattle579

1. Determine if the following events occur during Mitosis, Meiosis I, Meiosis II, Mitosis and Meiosis, Mitosis and Meiosis I, or Mitosis and Meiosis II. (Answers may be used once, more than once or not at all. Be as accurate as possible with your answer.)