The sexual reproduction is the form of reproduction obtained by the development of a fertilized egg or by the union of a maculine and a female sex cell.
More about sexual reproduction
Sexual reproduction requires two individuals. A mixing of both genetic codes occurs. This method is achieved through the production of reproductive cells, called gametes.
The pollination of trees, the external fertilization of fish or the internal fertilization of mammals are some examples of this form of reproduction. In the following sections we will show a series of advantages and disadvantages of sexual reproduction.
Advantages of sexual reproduction:
- Diversity. By combining different genetic codes, a great diversity is achieved. No two individuals are the same.
- Better adaptation. Genetic diversity allows the species to better adapt to sudden environmental changes.
- Better evolution. Genetic combination leads to better evolution of the species. The best adapted individuals will live longer and therefore reproduce more.
Disadvantages of sexual reproduction:
- Two individuals are needed. In some species it can pose a problem and even lead the species to extinction.
- It requires more energy and time. Both to find each other and to mate. In addition, a number of resources and energy must be allocated to the offspring.
- Dependence on external agents. In cases such as pollination, external agents are needed to carry out reproduction.
- Slower. Compared to asexual reproduction it is slower as the gestation period must be taken into account.
- Fewer individuals. Sexual reproduction produces fewer individuals than asexual reproduction. In some species it can be problematic for their survival.