Notes-Chapter 48

Notes-Chapter 48 - Chapter 48 Animal Reproduction No matter...

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Chapter 48: Animal Reproduction No matter what adaptations species possess, all adaptations are designed for species to gain enough energy and survive long enough to reproduce. If species are not well adapted population numbers will decline until the species becomes extinct., 99% of all species who have inhabited the earth have become extinct There are two main ways animals reproduce o Asexual reproduction- occurs without the fusion of gametes. It usually is based only on mitosis. Offspring are identical to their parents Types of asexual reproduction include: budding, binary fission, and parthenogenesis, Parthenogenesis is the production of new individuals by females from unfertilized eggs o Sexual Reproduction- occurs with the fusion of gametes, large non motile egg and tiny motile sperm Meiosis results in haploid gametes, the progeny from sexual reproduction are genetically different from themselves and their parents because of recombination Many animal species reproduce asexually and sexually. Almost all animals reproduce at least sexually. The most advanced animals like vertebrates
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This note was uploaded on 04/07/2011 for the course BIOL 104 taught by Professor Bray-speth during the Fall '11 term at Saint Louis.

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Notes-Chapter 48 - Chapter 48 Animal Reproduction No matter...

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