ANIMAL REPRODUCTION AND DEVELOPMENT
ASEXUAL REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ requires only one parent.
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____ produces offspring that are exact copies of parents.
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____ happens very quickly.
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____ needs two parents.
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Detailed explanation-1: -A disadvantage is that sexual reproduction takes longer than asexual reproduction. A mate must be found, the egg must be fertilised by sperm, and then the offspring develop. The benefit of introducing genetic variation into the species, however, outweighs this disadvantage.
Detailed explanation-2: -Sexual reproduction requires two parents. Each parent contributes a gamete-a sex cell that has half of the normal DNA of a regular body cell. In males, the gametes are sperm and in females, the gametes are eggs.
Detailed explanation-3: -The disadvantages of sexual reproduction include: (1) Finding a mate uses valuable resources (such as time and energy). (2) It is not possible for an isolated individual to reproduce sexually. As asexual reproduction can be done by an individual the above problems are not present.