Ovulation and ejaculation are the processes that involve the release of the female and male gamete for the process of fertilization.
<u>Ovulation</u>
- The release of an egg from one of a woman's ovaries is known as ovulation.
- Ovulation usually lasts for one day and takes place two weeks before a woman anticipates getting her period, in the midst of her menstrual cycle.
- However, the procedure takes a different amount of time for every woman, and it might even change from month to month.
- A sperm cell can fertilize an egg when it exits a woman's ovary and enters the fallopian tube.
- Sperm can survive for three to five days inside a woman's reproductive system.
- The uterine walls thicken during ovulation in order to accommodate a fertilized egg. On the other hand, if the egg is not fertilized, the uterine lining is lost around two weeks later, which results in menstruation.
<u>Ejaculation</u>
- Ejaculation, the male reproductive system's discharge of sperm cells and seminal plasma.
- Sperm are transported from the testicles and the epididymis, where they are stored, to the beginning of the urethra, a hollow tube that runs through the pen!s and transports either sperm or urine.
- In the second stage, known as the actual ejaculation, the semen is transported through the urethra and expelled from the body.
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Answer:
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Answer:
2. A change occurs in the environment.
4. Poorly adapted individuals have decreased survivorship.
1. Well-adapted individuals leave more offspring than do poorly adapted individuals.
3. Genetic frequencies within the population change.
Explanation:
The natural selection theory was developed by Darwin to explain how evolution occur within a population. The environment is in constant state of changes and always select for organisms that are better adapted to it.
Poorly adapted organisms gradually reduce from the population as a result of decreased survival while well-adapted individuals multiply and contribute more to successive generation.
Well-adapted individuals pass on the adaptive alleles to their offspring, eventually leading to a change in gene frequencies within the population.
Hence, the sequence of events is 2, 4, 1 and 3.
