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Animal Reproduction Case Study

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Animal Reproduction

Reproduction is a process by which offspring is produced to continue onto the next generation. There are two types of reproduction. Asexual reproduction involves one parent and its genes, which the offspring inherits. It doesn’t need fertilization or meiosis to occur. Fission, budding, and fragmentation are the three types of asexual reproduction. Fission is when the parent separates into at least two or more individuals of the same size. The development of different independent organisms are results from current individuals is budding. The dismantling of the body into various pieces, some or all of which evolve into entirely new organisms through the redevelopment of absent body parts is fragmentation. Sexual Reproduction involves two parents of different sexes that combine their genetic information to produce an offspring. Some animals are hermaphrodites while others use parthenogenesis. Parthenogenesis is asexual reproduction that doesn’t require fertilization from males. Hermaphrodites have both male and female reproductive systems. Some hermaphrodites can inseminate themselves, while others may still need the help of the opposite sex. Animals reproduce using internal or external fertilization. Internal fertilization, used by terrestrial animals as well as whales and dolphins, occurs insides the body. The internally fertilized eggs are protected and fed while they develop inside the body. External fertilization, used by fish and amphibians, occurs outside the body. More eggs are produced during external fertilization. The disadvantage of external fertilization is the exposure to predators. Pheromones are odorless chemicals delivered by a species used to effect the functioning of another organism of the same species. The main hormones in reproduction are oxytocin, endorphin, and adrenaline. They’re responsible for inducing and regulating…...

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