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Both unicellular and multicellular organisms undergo mitosis. What are the differences, if any, observed in the process between the two?
• In prokaryotes amitosis takes place, the cell directly divides into two daughter cells.
• Whereas in multicellular organisms, proper steps of cell division occurs; first the karyokinesis takes place then cytokinesis occurs.
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Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
a. Nuclear membrane fails to disintegrate
b. Duplication of DNA does not occur
c. Centromeres do not divide
d. Cytokinesis does not occur
Biology - Exemplar
A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (N) during metaphase? What would be the DNA content (C) during anaphase?Biology - Exemplar
Both unicellular and multicellular organisms undergo mitosis. What are the differences, if any, observed in the process between the two?Biology - Exemplar
Mitochondria and plastids have their own DNA (genetic material). What is known about their fate during nuclear division like mitosis?Biology - Exemplar
While examining the mitotic stage in a tissue, one finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number. Do you think cells with 16 chromosomes could have arisen from cells with 32 chromosomes or vice versa?Biology - Exemplar
Which of the events listed below is not observed during mitosis?Biology - Exemplar
Name the pathological condition when uncontrolled cell division occurs.Biology - Exemplar
The following events occur during the various phases of the cell cycle, Name the phase against each of the events.
a. Disintegration of nuclear membrane _________________________
b. Appearance of nucleolus _________________________
c. Division of centromere _________________________
d. Replication of DNA _________________________
Biology - Exemplar
If a tissue has at a given time 1024 cells, how many cycles of mitosis had the original parental single cell undergone?Biology - Exemplar