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Animal Reproduction

Brief description of animal reproduction

QuestionAnswer
Types of Asexual Reproduction Budding, Fission, Fragmentation, regeneration
Advantages of Asexual Reproduction Animals living in isolation can reproduce, Enables organisms to produce many offspring in a short time, stable environment ideal for successful genotype to produce precisely.
Reproductive Cycles Occur to allow organisms time to conserve energy for reproduction
Reproduction Cycles Controlled by hormones
Reproductive Cycle Triggers Hormonal and environmental cues
Environmental cues Temperature, Day length, lunar cycles, rainfall
Parthenogenesis Process by which an egg develops without being fertilized. Produces Haploid offspring
Examples of parthenogenesis in species Male honeybees, whiptail lizards
Hermaphroditism Each individual has both male and female reproductive systems. Can self-fertilize at times, but most must mate with same species
sequential hermaphroditism An individual reverses its sex during its lifetime.
Examples of sequential hermaphroditism Caribbean bluehead wrasse, oysters.
Mechanisms of fertilization internal fertilization, external fertilization.
External fertilization needs moist environment to keep gametes from drying out.
External fertilization triggers Environmental and behavioral
Internal fertilization Adaptation to terrestrial life, because it enables gametes to meet when the environment is dry.
Pheromones chemical signals that are released to attract a mate.
Created by: Erinlei
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