Directions: In the following questions a statement of assertion is fo...
Sexual reproduction is advantageous than asexual reproduction because in sexual reproduction progeny are genetically different from the parents as variations appear due to new combinations of genes during crossing over. Chance segregation of chromosomes and chance fusion of gametes. So it plays an important role in evolution. Sexual reproduction is slow mode of reproduction while asexual reproduction is rapid mode of reproduction.
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Directions: In the following questions a statement of assertion is fo...
Assertion: Sexual reproduction is advantageous than asexual reproduction.
Reason: It is a rapid mode of reproduction while asexual reproduction is a slow mode of reproduction.
The correct answer is option C, which states that the assertion is true but the reason is false.
Explanation:
1. Advantages of Sexual Reproduction:
- Genetic Variation: Sexual reproduction involves the fusion of gametes from two parents, resulting in offspring with genetic variation. This genetic diversity allows for better adaptation to changing environments and increases the chances of survival.
- Evolutionary Advantage: Sexual reproduction promotes the shuffling and recombination of genes, leading to new combinations that can be beneficial for evolution and adaptation.
- Elimination of Harmful Mutations: Sexual reproduction helps in the elimination of harmful mutations from the population through the process of natural selection.
- Enhanced Immunity: Offspring produced through sexual reproduction inherit a combination of immune system genes from both parents, resulting in a more robust immune system.
2. Disadvantages of Asexual Reproduction:
- Lack of Genetic Variation: Asexual reproduction involves the production of offspring without the fusion of gametes. As a result, the offspring are genetically identical or nearly identical to the parent. This lack of genetic variation can be disadvantageous in changing environments as there is no variation for natural selection to act upon.
- Limited Adaptability: Asexual reproduction does not allow for the shuffling and recombination of genes, limiting the adaptability of the offspring to new or changing environments.
- Accumulation of Harmful Mutations: Asexual reproduction can lead to the accumulation of harmful mutations in the population, as there is no mechanism for their elimination through sexual recombination.
3. Reasoning and Evaluation:
The reason provided in the statement is incorrect. Sexual reproduction is not necessarily a rapid mode of reproduction, and asexual reproduction is not always a slow mode of reproduction. The speed of reproduction can vary among different species and is not inherently linked to the type of reproduction. Therefore, the reason does not provide a correct explanation for the assertion.
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