In yeast and Amoeba, the parent cell divides to give rise to two new individual cells. How does the cell division differ in these two organisms? [Foreign 2010; HOTS]
Answers
Answer:
Amoeba reproduces by a special means of asexual reproduction called binary fission. In this process, the nucleus of Amoeba first divides to form two daughter nuclei. Later the body ofAmoeba splits into two halves, each half receiving its own nucleus. This leads to the formation of the two daughter Amoebae.
Budding is a type of asexual reproduction in which single parent is involved. During budd formation in yeast, small daughter bud is formed on parent and continues to grow untill it get separated. The daughter cell is generally smaller in size as compared to parent.
Explanation:
in amoeba first is karyokinesis (division of nucleus).
in yeast first is the growth of bulb like projection that is followed by kayokinesis.
both have cytokinesis in common.
but the last stage varies in both the cases parent body in amoeba divides totally to form 2 daughter cells but in yeast it is a part of parent body that divides and falls on the substratum to grow as a new individual.
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duration of cell cycle in yeast is 90 min min
but in ameoba is different
amoeba takes binary fission.