How would you explain the significance of meiosis in maintaining the chromosome number of organism? (ESSAY FORM)
Answers
Answer:
meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes meiosis also produce genetic variation by way of the process of recombination
Answer:
Explanation:
The significance of meiosis in maintaining the chromosome number of organism.
Meiosis is the process by which the parent cell divides twice to produce four haploid daughter cells that each carry half of the original genetic material. Meiosis is used to create the gametes.
Meiosis has the following characteristics: • It results in the development of four daughter cells in each cycle of cell division; • The daughter cells are haploid and identical in size and shape to the mother cell, but they differ in chromosome number.
• Meiosis involves segregation and recombination.
• Gametes are created as a result of the procedure, which takes place in the reproductive organs.
Meiosis I, also known as reductional division, halves the number of chromosomes in half and is one of two forms of the process. The second meiosis is identical to the mitotic division.
Significance :
1. Meiosis is responsible for creating the gametes, or sex cells, needed for sexual reproduction.
2. It deactivates the sporophytic information while activating the genetic information for the production of sex cells.
3. By halving the same, it keeps the number of chromosomes constant. This is significant because following fertilisation, the number of chromosomes doubles.
4. Independent assortment of the maternal and paternal chromosomes occurs in this phase. As a result, the chromosomes and the features they regulate are rearranged.
5. Incorrect meiotic cell division results in the genetic mutation. Natural selection perpetuates the advantageous mutations.
6. When two species cross, new traits and variants are created.
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