Activity 4 Mitosis Postlab

Activity 4: Cell Cycle and Mitosis Postlab Discussion

WHITEFISH BLASTULA

INTERPHASE

PROPHASE

METAPHASE

ANAPHASE

EARLY TELOPHASE

LATE TELOPHASE AND CYTOKINESIS

Also watch: http://www.youtube.com/watch?v= VlN7K1-9QB0

Answers to Guide Question:

1. Why is the fish embryo used to demonstrate the different stages of the cell cycle? 

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Cells are actively undergoing cell division Cell division occurs asynchronously

2. As you scan through the different cells for the whitefish blastula, which of the stages of cell cycle is frequently observed? Why is this so?  

Interphase A cell spends most of its time in interphase – Stage of growth, respiration, protein synthesis, etc.

3. Differentiate the following terms: chromatin, chromosome, chromatids: 





CHROMATIN - single, thin DNA strands + histones and other proteins CHROMOSOME - single large macromolecule of condensed DNA, and constitutes a physically organized form of DNA in a cell CHROMATID - one of two identical strands of DNA making up a chromosome that are joined at their centromeres

END

Thank you.