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master lense maker
could see protazoa and bacteria |
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started experiments to show that some traits were sex-linked
from Columbia University |
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Theory of Epigenesis
Who proposed this theory? |
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substances in gametes produce adult structures, but these structures are not pre-made. They are built during growth.
Harvey |
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| coined the word "cell" when looking at cork |
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| sees the first cell nucleus |
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| names the center of a cell the nucleus and describes the Brownian motion of particles. |
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| summarizes cell biology by saying that cells come from other cells |
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| describes sperm and egg being zygotes |
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| sees chromosomes using colored dyes |
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| coins the word "chromosome" |
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| Boveri, Rabi and Van Benden |
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| hypothesize that chromosomes stick from generation to generation |
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| sees that inheritance comes from nucleus and notices meiosis |
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| hypothesized that white eyes were x-linked trait. similar to morgan's experiments. |
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| creates first genetic map |
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| explains nondisjunction in flies |
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| show mutilated genes with xrays |
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| coins the terms F1, F2, homozygote, heterozygote and allele |
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| coins the terms phenotype and genotype |
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| show that DNA is the genetic material |
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| work out the structure of DNA but stole most of the info from Rosemary Franklin who did light cyrstalography |
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| describe the enzymes that help us to manipulate dna through recombinant DNA technology |
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