Cronologie Flashcards

1
Q

Ce se intampla in 1842?

A

Karl Wilhelm -> cromozomii sunt prima data observati

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2
Q

Ce se intampla in 1866?

A

Gregor Mendel -> formuleaza teoria ereditatii

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3
Q

Ce se intampla in 1869?

A

Friedrick Miescher -> primele studii asupra nucleilor extrasi din celulele aflate in puroiul colectat din bandajele plagilor => compusi ai fosforului pe care-i numeste NUCLEINA

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4
Q

Ce se intampla in 1889?

A

R Atlan -> izoleaza nucleina si ii descopera caracterul acid => acid nucleic

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5
Q

Ce se intampla in 1884?

A

O Hertwig are intuitia sa afire ca ,, nucleina este responsabila nu numai pentru fertilizare, ci, de asemenea , pentru transmiterea caracterelor ereditare”

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6
Q

Ce se intampla in 1900?

A

Anul geneticii ca stiinta-> Hugo de Vries ( Olanda)+ Correns( Germania) + E. Tschermanck( Austria) redescopera independent legile ereditatii ale lui Mendel
-> observa pentru prima oara perechile de cromozomi

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7
Q

Ce se intampla in 1902?

A

Theodor Boveri-> demonstreaza ca dezvoltarea normala a celulelor depinde de existenta unei combinatii normale de cromozomi

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8
Q

Ce se intampla in 1905?

A

W Bateson -> in Londra, la cea de a treia conferinta interanttionala de hibridare a plantelor, utilizeaza cuvantul genetica

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9
Q

Ce se intampla in 1909?

A

Apare notiunea de genotip si fenotip

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10
Q

Ce se intampla in 1928?

A

Griffith a descoperit ca diferite tulpini ale pneumococului ………….

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11
Q

Ce se intampla in 1936?

A

WM Stanley- identifica acizii nucleici in VMT

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12
Q

Ce se intampla in 1933?

A

Primele harti croozomiale facute de Morgan

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13
Q

Ce se intampla in 1937?

A

Bowden descopera ca VMT contine ARN

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14
Q

Ce se intampla in 1943?

A

Joachim Hammerling- utilizand Acetabularia Mediteranea si Acetabularia Crenulata demonstreaza rolul nucleului

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15
Q

Ce se intampla in 1944?

A

O T AVery- demonstreaza ca ADN ul sta la baza transformarilor pneumococilor

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16
Q

Ce se intampla in 1952?

A

Robert Briggs si Thomas King - extrag nucleii din celulele emrionare de broasca

17
Q

Ce se intampla in 1951?

A

A avut loc secventierea primei proteine

18
Q

Ce se intampla in 1952?

A

Alfred hershey si Martha Chase demonstreaza ca ADN este material genetic

19
Q

Ce se intampla in 1953?

A

Watson si Crick -> fac modelul de structura dublu helicala studiat prin difractie in raze Rontgen

20
Q

Ce se intampla in 1957?

A

H Fraenkel Conrat si B Singer- demonstreaza rolul ARN in VMT

21
Q

Ce se intampla in 1958?

A

Benzer -> utilizand sistemul bacterie-bacteriofag in analiza genetica, evidentiaza faptul ca genele sunt unitati functionale in transmiterea unui caracter, dar ele prezinta subunitati de recombinare si mutatie , cea mai mica unitate mutationala fiind rerezentata de perechea de nucleotide

22
Q

Ce se intampla in 1958?

A

A fost stabilitata replicarea semiconservativa a ADN

23
Q

Ce se intampla in 1961?

A

Caracterul triplet al al codului genetic ( Marshall si Nirnberg)

24
Q

Ce se intampla in 1977?

A

La eucariote genele sunt constituite din introni si exoni

25
Q

Ce se intampla in 1995?

A

A fost secventat genomul Haemophilus influenzae