Types of Development

Types of Development - Types of Development overview of...

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Types of Development overview of development - control of gene expression >> specialization fungi development - only reproductive cells are specialized o higher fungi - basidiomycetes/ascomycetes, produce pheromones that influence other cells o usually just long cell filaments not completely separated from each other o mostly a growth process, not specialization plant development - variety of specialized cells organized into tissues/organs o environment determines exact array of tissues animal development o environment doesn’t affect animals as much as plants vertebrate development - cells divide rapidly, forms shape, organs cleavage - initial period of cell division o zygote divides >> blastomeres (small cells) >> ball of cells made o no increase in size for embryo o animal pole - end of zygote where blastomeres go on to form external tissues o vegetal pole - end of zygote where blastomeres go on to form internal tissues o point where sperm enters egg = future belly o gene transcription begins after about 12 divisions formation of the blastula - creates hollow ball of cells called blastula o aka blastocyst in mammals
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Types of Development - Types of Development overview of...

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