Question

Kod of serie Questions Name Aime Guendue Dan Be and we st The D ochis was Thoughes to the a uthor you to search Store Tapers loose disput e 3. What is the difference between the terms chromosome and chrom Chromosomes con packed CNA Wire The one hand, Chromatas ONA W S unwound Cow Che a ts function! Spindle,tikers provide a framework & means of attachment that keeps chromosomes organized aligned & assorted during the process of MITOSS 5. During what stage(s) of mitosis are chromosomes composed of two chromatids? In the Stade from policies on new phase Propnase 6. During what stage(s) of mitosis are chromosomes single structures (not duplicated)? 7. How does cytokinesis differ in plant and animal cells? 8. Most cells spend longest amount of time in what stage? What evidence do you have from the onion root tip to support this statement? 9. Why is it difficult to find interphase cells in the whitefish blastula slide? It is in the reading for this lab. 10. For complete cell division to occur what has to occur in addition to mitosis?

Answer 1

Q6. It is during G₁ phase that all the cellular components except for the chromosomes duplicate, the chromosomes duplicate during the S phase of mitosis.

Q7.Cell membrane completes constriction in telophase. Nuclear membrane forms followed by cytokinesis. Actin filaments decides the plane of contractile ring formation in case of animal cell.

In plant cell: Involves the formation of cell plate. Cell plate formation include creation of the phragmoplast, an array of microtubules that guides and supports the formation of the cell plate. The phragmoplast is assembled from the remnants of the mitotic spindle, and serves as a track for the trafficking of vesicles to the phragmoplast midzone. These vesicles which are from Golgi contain lipids, proteins and carbohydrates needed for the formation of a new cell boundary.

Q8.Most of the cells spend longest time in Interphase which is the preparatory phase for cells to divide it lasts for almost 23 and half hours whereas M phase takes only 30 minutes where the cells actually divide into two.

Q9. As it reaches its full size therefore distinct chromosomes are not visible.

Q10. For the cell division to occur the cell undergoes interphase, mitotic phase and cytokinesis.