Home
Class 11
BIOLOGY
Comment on the statement - Meiosis enabl...

Comment on the statement - Meiosis enables the conservation of specific chromosome number of each species even though the process per se, results in reduction of chromosome number.

Text Solution

Verified by Experts

The certain number of chromosomes is maintained in living organisms possessing sexual reproduction by meiosis from generation to generation. During the process number of chromosomes becomes half. Generally due to fusion of male and female gametes it is restored in next generation. Meiosis represents genetic variations from one generation to other generation.
Promotional Banner

Topper's Solved these Questions

  • CELL CYCLE AND CELL DIVISION

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Exemplar) ( Long Answer Type Questions )|6 Videos

  • CELL CYCLE AND CELL DIVISION

    KUMAR PRAKASHAN|Exercise Questions from Module (Important MCQ for NEET)|9 Videos

  • CELL CYCLE AND CELL DIVISION

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Exemplar) ( Very Short Answer Type Questions)|15 Videos

  • CELL : THE UNIT OF LIFE

    KUMAR PRAKASHAN|Exercise Questions from Module (Question Paper)(Describe in detail:)|1 Videos

  • CHEMICAL COORDINATION AND INTEGRATION

    KUMAR PRAKASHAN|Exercise Objective Section (Fill in the blanks)|9 Videos

Similar Questions

Explore conceptually related problems

Meiosis is important for maintenance of specific number of chromosomes from generation to generation.

What would be the number of chromosomes in the cell of the aleurone layer in a plant species with 8 choromosomes in its synergids

Identify the wrong statement about meiosis (A) Pairing of homologous chromosomes (B) Four haploid cells are formed (C) At the end of meiosis the number of chromosomes are reduced to half (D) Two cycle of DNA replication occurs

An organism has two pair of chromosomes (i.e., chromosome number = 4). Diagrammatically represent the chromosomal arrangement during different phases of meiosis-II.

One gram mole of oxygen at 27^@ and one atmospheric pressure is enclosed in vessel. (i) Assuming the molecules to be moving the V_(rms) , Find the number of collisions per second which the molecules make with one square metre area of the vessel wall. (ii) The vessel is next thermally insulated and moved with a constant speed V_0 . It is then suddenly stopped. The process results in a rise of the temperature of the gas by 1^@C . Calculate the speed V_0 .

A cell has 48 chromosomes at each pole in mitotic telophase. In this division the number of chromatids at the metaphase was :

Which of the following statement is true for variation in organisms? (1) The occurrence of differences among the individuals of the same species is known as variation. (2) Variations decrease the possibilities of survival. (3) The process of evolution decreases the variation in organisms. ( 4) During meiosis, crossing over takes place between the genes and hence, new combinations are formed, which ultimately results in producing variations.

Give scientific reasons for the following statements: Each new generation through sexual mode of reproduction will end up in equal number of chromosomes and the DNA content instead of double to its parents.

Read the following statements. (A) Each genus may have one or more than one specific epithet. (B) Genera are aggregates of closely related species. (C) Family has a group of related genera with still more number of similarities as compared to genus and species. How many statements are correct and incorrect from these ?