Biology
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Class notes
Class notes biology (bgy3003)
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---11August 20222022/2023
- Cleavage is a word for a kind of splitting or separation: it's mainly used for the split between a woman's breasts. We can talk about many kinds of cleavage, such as the splitting of a cell or a hunk of wood. Political movements will often have a cleavage, as differences of opinion create factions.
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Class notes
Class notes biology (bgy3003)
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---7August 20222022/2023
- Polyspermy requires that the sperm transmit the egg activation signal more slowly, thus allowing the egg to accept several sperm. An increase in intracellular Ca2+ concentration induced by the fertilizing sperm is both necessary and sufficient for egg activation in polyspermy.
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Class notes
Class notes biology (bgy3003)
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---10August 20222022/2023
- The process of initiation and development of an organ is called organogenesis. In plant tissue culture, inducing organogenesis is an important way to regenerate plants from the culture. Plant cells are grown in culture which allows them to be manipulated and then induced to develop into whole plants
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