Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Reproduction: Asexual vs. Sexual TEKS 7.14B compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction Reproduction is important for the survival of all living species. Without a way to reproduce, life would come to an end. There are two types of reproduction, asexual & sexual. Sexual reproduction Sexual reproduction involves fertilization so it typically requires the sex cells of two parents. Advantages of Sexual Reproduction: The offspring will be different from its parents. Advantages of Sexual Reproduction: Genetic variation allows the species to adapt to its surroundings. Advantages of Sexual Reproduction: “Good” traits are passed on and strengthen the species which increases their survival rate. Advantages of Sexual Reproduction: The fertilized egg can sometimes survive in adverse conditions. Disadvantages of Sexual Reproduction: Requires two sets of sex cells (egg and sperm) usually produced by two parents that must get together to mate. Disadvantages of Sexual Reproduction: Often slower, more complex & less reliable than asexual reproduction. Examples of Sexual Reproduction: Most animals reproduce sexually. (fly, human, snake, frog) Examples of Sexual Reproduction: All flowering plants and those that make seeds reproduce sexually. (daffodil, grass, rose, oak tree). Examples of Sexual Reproduction: Fertilization may be internal (mammals, birds, reptiles) or external (frogs, fish). Asexual Reproduction Asexual reproduction involves one parent & results in an exact duplicate of an organism. Advantages of Asexual Reproduction: Usually faster and easier, so a new plant or animal can colonize an area more quickly. Advantages of Asexual Reproduction: A mate does not have to be found so no travel is involved which saves energy. Advantages of Asexual Reproduction: Less complex and more reliable. Advantages of Asexual Reproduction: Can produce a large number of offspring very quickly. Disadvantages of Asexual Reproduction: The new organisms are genetically identical to their parent and each other. Disadvantages of Asexual Reproduction: Adaptation does not occur. Disadvantages of Asexual Reproduction: Organisms with no variation that cannot adapt may become extinct. Examples of Asexual Reproduction: Plants and fungi that make spores (mosses, ferns, mold, mushrooms) Spores Examples of Asexual Reproduction: Single cells, which reproduce by binary fission or splitting in two (amoeba, bacteria). Binary fission Budding: Spider plants and hydras form new organisms when part of the parent breaks off to form a daughter cell that grows into a new individual that is identical to the parent. Budding Runners: Grass and strawberries can form horizontal stems that grow on top of or just below the ground which can produce new plants horizontally at nodes or tips along the stem. Runners Fragmentation: Some plants, planarian and other worms can be split into many fragments that each grow into new identical individuals. Fragmentation Regeneration: Type of fragmentation in which starfish, lizards & sponges can grow back body parts that are damaged or lost.