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Definition
| that the whole organization. in the sense of every atom or unit, reproduces itself. |
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| darwin believed what to be the units of reproduction? |
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| gemmules are found where? |
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Definition
| in every part of the organism. |
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| gemmules are specific localized what? |
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Definition
| types, (liver gemmules, ear gemmules) |
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Definition
Darwin's Cousin, IQ , in stats he was also a proponent in eugenics. Tested Darwin's ideas. |
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| problems with Pangenesis? |
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Definition
gemmules were never actually observed inheritence of acquired characteristics was not observed blending wasn't compatible with patterns of inheritence cytologicalobservations led to the idea that chromosomes were the unit of heredity. weismann barrier, idea that there was a strict segregation of soatic and germ lines, was accepted. |
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Term
Theodore schwann (1810-1882)
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Definition
helped in the development of the cell theory discoverer of pepsin, organic nature of wheat, and metabolism |
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Term
Ruloph Virchow (1821-1902) |
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Definition
all life from life, all cells from cells father of pathology |
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Definition
| epigensis : gradual formation |
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| Karl Ernst von Baer (1792-!876) |
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Definition
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| 1873 Schnieder first saw what? |
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Definition
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Definition
father of cytogenetics (study of the structure of chromosome) |
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Term
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Definition
gonads only to reproduce an other somatic cell heredity material is nuclear and found on chromosomes development is a result of epigenesis |
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Term
| Edward Van Beneden, Teodor Boveri, Oskar hertwig discovered |
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Definition
| number of chromosomes are reduced by one half |
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Term
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Definition
stain on chromosomes humans have 23 pairs of chromosomes n=23 (haploid chromosome number) |
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Term
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Definition
process that precicely segregates duplicated genetic material. (two identical cells with complete diploid genome) |
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Definition
| partitioning of genetic material |
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Term
| cytokinesis has four phases? |
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Definition
prophase metaphase anaphase telephase |
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Term
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Definition
organization of cytoplasmic components duplication/migration of centrosomes formation of spindle fibers Nuclear Events: break down of nuclear envelope condensation of chromosomes |
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Term
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Definition
alignment of chromosomes at the midline chromosomes migrate to the middle of the cell along the lines of spidle fibers during prometaphase. at metaphase they are all lined up in random order by the centromere at metaphase plate. |
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Term
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Definition
seperation of chromosomes centromeres split, seperating sister chromids, each sister chromid is drawn apart by moelcular motors on spindles, drawing them apart in opposie sides of cells. |
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Definition
restoration of normal cell morphology disassembly of spindle fibers reformation of nuclear envelope unfolding and dispersal of chromatin cytokinesis (usually) |
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| procduces cells that have precicely half the gentic complement |
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Definition
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sometimes consist of two chromatids sometimes consist of a single chromatid normally possess a single centromere clearly visible as defined bodies in the light microscope |
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Definition
consists of mitosis and interphase a cell can remain in G1 for weeks or much longer proteins are formed throughout all subphase and interphase histones are synthesized primarily during S phase |
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Definition
| homologous chromosomes seperate from one another in anaphse 1 |
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Term
| DNA replicates in what phase? |
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Definition
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| the synapse of homologous chromosomes happen where? |
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Definition
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| if there is a loss of chromosome usually what happened? |
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Definition
| nondisjunction in meiosis 1 |
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Term
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Definition
pick a simple model system select a small number of easily measured features use established true breeding strains |
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Term
| three scientists who recreated mendels plant hybridization experiements, and recovered mendels paper were? |
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Definition
| correns, de vries and tschermak |
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Definition
| segregatoin, 2 traits there only one shown |
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Definition
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| mendel made recipricocal crosses to do what? |
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Definition
| to rule out the possibilty that the sex of the parent carrying the specific form made a difference. |
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