Thursday, August 18, 2011

3.1 Sexual and Asexual reproduction

3.1 differences in sexual and asexual reproduction

1. organisms that have sexual reproduction show sexes that is when they can be identified as a male or female. In asexual reproduction organisms do not have sexes.

2. sexually reproducing organisms produce cells called gametes, this take the form of the male in the sperm cell and the female in the egg cell. asexually reproducing organisms have no gametes.

3. the type of cell division that produces gametes is called Meiosis which halves the number of adult chromosomes through cell division in the gamete cell. in an organism that shows asexual reproduction there is mitosis and binary fission, in this process the number of chromosomes is maintained constantly and are identical.

4. In sexually reproducing populations we find the process of fertilisation in which the sperm cell from the male and the egg from the female fuse. The are no gametes in asexual reproduction therefore no fusion of the cells and no fertilisation occurs.

5. in the population of sexually reproducing organisms there is a broad variety in the individuals of this population whereas in asexual reproduction show small amounts of variations in the individuals in this population.

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