Development

Development - Development: I. Introduction: a. All...

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Development: I. Introduction: a. All multicellular organisms have some form of development; however the complexity of the development depends on Kingdom. i. Kingdom Fungi: Most fungal cells are the same, thus development is minimal ii. Kingdom Viridiplantae: They do have specialized cells, thus development is much more complex than fungi. 1. Course of development can change in plants, for example if part of a bush is lopped off, it can continue to grow. iii. Kingdom Animalia: 1. Very complex developmental pathways. b. Model organisms i. Mus musculus (mouse) 1. Used as a model organism for vertebrates and mammals in general 2. Up to 8 cell stage: any cell could develop into the whole organism a. “totipotent” ii. Drosophila (fruit fly) 1. Fast generation time, small size, easy maintenance, and simplicity make them prime subjects for study. 2. Metamorphosis: a. Their body plan/form changes through life. i. Egg, larvae, pupa, adult ii. Larva = eating machine, pupa sits and twitches, and adult is the final developed organism. 3.
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Development - Development: I. Introduction: a. All...

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