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Animal Reproduction

Animal Reproduction. Reproduction in Animals. Asexual Reproduction: A single living organism that can produce one or more identical individuals Sexual Reproduction:

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Animal Reproduction

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  1. Animal Reproduction

  2. Reproduction in Animals • Asexual Reproduction: • A single living organism that can produce one or more identical individuals • Sexual Reproduction: • The combination of male and female gametes, each of which contain half of the genetic material necessary to the future offspring.

  3. Gamete: The male or female reproductive cell that can unite with another, similar cell from the opposite sex, through a process called fertilization • Sperm: The male reproductive cell, which includes a “tail” for movement (the whole structure is called a spermatozoa) http://www.youtube.com/watch?v=6rauO_M9tb4

  4. Ovum: The female reproductive cell, the plural is “ova”. Commonly called an egg. http://www.youtube.com/watch?v=2-VKgdhfNpY&feature=related

  5. Steps of Vertebrate Reproduction • 1. Male gamete fuses with a female gamete • 2. Fusion produces a cell called a zygote that contains complete genetic material • 3. The zygote divides and transforms into an embryo with many cells

  6. 4. The embryo develops into a small animal • 5. When the animal becomes an adult it will produce gametes and reproduce

  7. Conditions for Sexual Reproduction • 1. Male and female gametes must be at the same place at the same time • 2. The zygote must obtain the nutrients and protection it needs to survive including warmth and moisture

  8. Oviparous: Lays eggs- reptiles, birds, amphibians, insects and fish • Viviparous: Fertilized ovum develops completly inside the mother’s body- almost all mammals • Ovoviparous: Produce eggs but do not lay them, instead keep them inside their body- snakes

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