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undergraduate thesis
Prirodna selekcija
Zagreb: University of Zagreb, Faculty of Science, 2021. urn:nbn:hr:217:450040
Fućak, Eliza
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Fućak, E. (2021). Prirodna selekcija (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:450040

Fućak, Eliza. "Prirodna selekcija." Undergraduate thesis, University of Zagreb, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:217:450040

Fućak, Eliza. "Prirodna selekcija." Undergraduate thesis, University of Zagreb, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:217:450040

Fućak, E. (2021). 'Prirodna selekcija', Undergraduate thesis, University of Zagreb, Faculty of Science, accessed 25 May 2024, https://urn.nsk.hr/urn:nbn:hr:217:450040

Fućak E. Prirodna selekcija [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Science; 2021 [cited 2024 May 25] Available at: https://urn.nsk.hr/urn:nbn:hr:217:450040

E. Fućak, "Prirodna selekcija", Undergraduate thesis, University of Zagreb, Faculty of Science, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:217:450040

Metadata
TitlePrirodna selekcija
Title (english)Natural selection
AuthorEliza Fućak
MentorDamjan Franjević (mentor)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2021, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Evolucija je proces promjene organizama tijekom vremena. Promjene su moguće na maloj skali, mikroevoluciji, gdje se promjene događaju na razini gena i jedne vrste. Uzrok takvih promjena mogu biti mutacije u sekvenci DNA, migracije (protok gena) ili genetički drift. Obično je promatrana kroz nekoliko generacija. Na većoj skali, pri makroevoluciji, promatramo dugoročne efekte mikroevolucije, ne samo jedne vrste, već više njih. Jednim od glavnih procesa evolucije, pokretačem, smatra se prirodna selekcija. Prirodna selekcija radi na principu odabira organizama koji su najprilagođeniji životu (i razmnožavanju) određenim okolišnim uvjetima i dostupnim resursima. Mutacije jesu slučajne, ali prirodna selekcija nije. Dugoročnim selekcioniranjem potiče se nastajanje adaptacija kod organizama kako bi si povećali vjerojatnost za preživljavanje. Adaptacije mogu biti bihevioralne, morfološke ili na razini samih proteina. Seksualna selekcija je poseban oblik selekcije koji se javlja kod vrsta koje se seksualno razmnožavaju. Neka svojstva koja su favorizirana u seksualnoj selekciji (veći broj potomaka), mogu smanjivati ono što je favorizirano u prirodnoj selekciji (opstanak). Uspješnost nekog organizma se mjeri fitnessom tj. razinom reproduktivne uspješnosti organizma.
Abstract (english)
Evolution is a process of change within organism in time. Changes can be observed on a smaller (microevolution) or larger (macroevolution) scale. Microevolution observes change at gene level of one specie through several generations. Those changes can be caused by mutation in DNA sequence, migration (gene flow) or genetic drift. Macroevolution talks about longterm effects of microevolution, not only of one but more species. One of main processes of evolution is natural selection. Organisms which are the best suited for survival in a specific environment and a certain amount of resources will survive and reproduce. Mutations happen by chance but natural selection doesn’t. One of the effects of natural selection can be emergence of adaptations. Adaptations are certain traits that organism evolved through time and which helps in the survival of said organism. They can be bihevioral, morphological or on protein level. Sexual selection is a special type of selection that is find in species that reproduce sexually. Some traits which are favourited in sexual selection for the end result of more descendants (higher fertility) can lower favourited outcome of natural selection (survival). Fitness is the measure of organism’s reproductive success.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:450040
Study programmeTitle: Molecular Biology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-09-20 08:10:46