1. Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies.

    Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies.

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  2. Sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maiRead more

    Sometimes for a species, the environmental conditions change so drastically that their
    survival becomes difficult. The variations ensure that the survival of the species as they allow the members of population to adapt to the changing environment and conditions. Thus continuity of the species is maintained.

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  3. Trait B is likely to have arisen earlier because it exist in a higher percentage of the population as compared to trait A.

    Trait B is likely to have arisen earlier because it exist in a higher percentage of the population as compared to trait A.

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  4. Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution. For example: A population of heat resistant bacteria in the temperaturRead more

    Variation is important for the evolution of the species. Variations can be beneficial or harmful according to the ecological niche of the organism. A variation suitable for the particular niche is selected by nature in evolution.

    For example: A population of heat resistant bacteria in the temperature of the water survives if the temperature of water increases by global warming but most other bacteria would die.

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  5. DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell. DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed aRead more

    DNA (Deoxyribonucleic acid) is the genetic material found in the chromosomes, which are present in the nucleus of a cell.

    DNA copying in reproduction is important because it makes the organism look similar to each other. If DNA is not copied during reproduction, correct proteins will not be formed and the structure of the individual will be entirely different.

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