Question

explain the binary fission in amoeba ​

Answer 1

Answer:

Binary fission is a type of asexual reproduction typically observed in prokaryotes and few single-celled eukaryotes. In this method of asexual reproduction, there is a separation of the parent cell into two new daughter cells. This process happens with the division and duplication of the parent’s genetic matter into two parts, here, each daughter cell receives one copy of its parent DNA.

It is a primary method of reproduction in prokaryotic organisms. Binary Fission occurs without any spindle apparatus formation in the cell.  In this process, the single DNA molecule begins replication and then attaches each copy to various parts of the cell membrane. When the cell starts to get drawn apart, the original (actual) and replicated chromosomes get apart.

However, asexual mode of reproduction has a significant drawback. All resultant cells are genetically identical, mirror copies of each other and the parent cell. Most antibiotics work on this principle. If a parent cell is vulnerable to an antibiotic, then all resultant daughter cells are vulnerable too. If a mutation occurs in their genes, then it can render a particular strain resistant to antibiotics.

Prokaryotes such as E. coli, Archaea as well as eukaryotes such as euglena reproduce through binary fission.

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Answer 2

Answer:

• Fission refers to the division of cell into 2 parts.
• This is the simplest type of asexual reproduction
• This is seen in unicellular (single-celled) organisms
• Binary fission specifically involves, the fully grown parent cell splitting into two halves, producing two new cells.
• In adverse conditions, yeast is known to undergo multiple fission, in which one cell divides into many daughter cells at once.

Explanation:

• Amoeba is the most common example of an organism that undergoes Binary Fission.
• Amoeba divides after it has grown to a certain size.
• The pseudopodia are pulled in and the nucleus divides.
• The cell body begins to divide when the nucleus has split.
• Two daughter amoebae are formed.

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