REPRODUCTION IN ANIMALS Mrs. Sandy Gomez REPRODUCTION Requires only one parent (Adnavtage) Takes place faster Less genetic diversity (Disadvantage) 2 types of reproduction: Asexual Sexual Sexual Reproduction Asexual Reproduction ASEXUAL REPRODUCTION Requires only one parent (Adnavtage) Takes place faster Less genetic diversity (Disadvantage) ASEXUAL REPRODUCTION Common in: Cnidarians Some lizardsBacteria Plants Fungi REPRODUCTION Requires only one parent (Adnavtage) Takes place faster Less genetic diversity (Disadvantage) 2 types of reproduction: Asexual Sexual Sexual Reproduction Asexual Reproduction ASEXUAL REPRODUCTION Types of asexual reproduction: Binary Fission BuddingVegetative Propagation Sporulation Fragmentation Parthenogenesis SEXUAL REPRODUCTION Requires two gametes from different parents:(Disdvantage) Egg cell (female) Sperm cell (male) Takes place longer Maintains genetic diversity (Advantage) TYPES OF FERTILIZATION 2 types: Internal Fertilization External Fertilization Eggs are fertilized inside the body of the egg- producing individual Eggs are fertilized outside the body of the egg- producing individual Some invertebrates: 1.Sponges, spiders Vertebrates: 1.Some fish and amphibians 2.All reptiles, birds and mammals Some invertebrates: 1.Sponges, spiders Vertebrates: 1.Some fish and amphibians 2.All reptiles, birds and mammals Some invertebrates: 1.Corals, worms, mollusks Vertebrates: 1.Some fish and amphibians Some invertebrates: 1.Corals, worms, mollusks Vertebrates: 1.Some fish and amphibians DEVELOPMENT AND GROWTH After fertilization takes place, where do embryos develop? Developing Embryos Ovoviparous: -Outside parents body -Nutrients obtained from egg yolk Viviparous: - Inside parents body -Obtains nutrients from mothers body Ovoviviparous: -Inside parents body -Nutrients obtained from egg yolk DEVELOPMENT AND GROWTH Oviparous Viviparous Most invertebates, reptiles Some fish and amphibians All birds Few mammals Most mammals Some: insects, sharks, amphibians, reptiles DEVELOPMENT AND GROWTH Ovoviviparous Some: 1.Fish 2.Shark 3.Reptiles