Bio 004, College of the Desert

What is the function of a spindale?
- Seporate the daughter chromosomes
- The function of a spindale is to divide and distribute chromosomes into daughtor cells (chromatide).
Durring what stage(s) of mitosis are chromosomes composed of single structures composed of one chromatid?

Anaphase and Telaphase
First two reasons meiosis is necassary in sexually reproduceing organisms?
- 1) Division of the number of chromasomes in half.
- 2) Increase Genetic diversity
List two (2) activities that occure miosis that contribute to the veriety seem in the gametes.
- Choose any two:
- 1) Synapsis
- 2) Cross - over
- 3) Segregation
- 4) Independent assortment
List the activities that occure durring meiosis that contribute to the variety seen in the gametes produced.
- 1) Synapsis
- 2) Cross - over
- 3) Segregation
- 4) Independent assortment
Synapsis

Pairing of homologous chromosomes.
Cross - over

Exchange DNA (genes)
Segregation

Seporate homologous chromosomes (Anaphase).
Independent assortment

Chromosomes seporate with out regard for each other.
Describe the main event happening in any cell undergoing metaphase.

The chromosomes line up at the equator.
Durring what stage(s) of mitosis are chromosomes composed of two chromatids?

Prophase and Metaphase
Prophase
- Produce; produce enough to start seperating in the next phase.
Metaphase
- Meet at equator.
Anaphase
- Seporation starting at the equator.
Telaphase`
- cleavage
Interphase (2)
- 90% of the time.

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Mattyj1388

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Bio 004, College of the Desert

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Updated

2011-06-25T22:26:44Z