Jeste elementarna i Vili ne prica o vremenu od prvog Homo Sapiensa vec o periodu o kom ste polemisali - savremenom dobu.
Da je rec o savremenom dobu govorilo potvrdjuje tvoje nadovezivanje jer joj odmah odgovaras pricom o danasnjim dekama maratoncima koje poredis sa generacijama s pocetka XX veka.
Covek se u poslednjih par stotina godina nije elementarno promenio osim sto je pod direktnim uticajem vestackih faktora (medicine, ishrane i boljih uslova zivota i rada) postao otporniji i zivi koju godinu duze. Kada iskljucis te faktore, rezultati ce biti vise nego evidentni.
Ne mozes pricati samo o savremenom dobu kad pricas o promeni zivotnog veka, to je ograniceno. Ja sam se nadovezala sa dekama da joj dam primer da se zivotni vek i radni produzio (kako sam prethodno navela usled bioloskih faktora i medicine) u razvijenim zemljama. Bilo bi glupo da joj dajem primer iz istorije, iako oni stoje.
Ovaj bold ti je netacan jer se covek menja u razlicitim grupama usled razlicitih faktora:
In the Lake Maracaibo region of northwest Venezuela, for instance, there is an extraordinarily high frequency of a severe genetically inherited degenerative nerve disorder known as Huntington's disease. Approximately 150 people in the area during the 1990's had this rare fatal condition and many others were at high risk for developing it. This disease usually does not strike until early middle age, after most people have had their children. However, Huntington's can occur much earlier. About 10% of its victims develop symptoms when they are younger than 20 years old. There is no cure for this disease, but there has been a test for its genetic marker available since 1993. All of the Lake Maracaibo region Huntington's disease victims trace their ancestry to a woman named Maria Concepción Soto who moved into the area in the 19th century. She had an unusually large number of descendants and was therefore the "founder" of what is now a population of about 20,000 people with a high risk of having this unpleasant genetically inherited trait.
Evolucija je proces i desava se u kontinuitetu, pa i u zadnjih par stotina godina:
Evolution is a continuous process, but major evolutionary changes are rare events. Major evolutionary changes distinguish one population from another and result in the creation of a new species. Evolutionary changes that mark the appearance of a new species (or genera and higher) are macroevolutionary events.
However, evolution can occur within a species. Think about the human allele for sickle-cell disease; populations living in areas with high incidences of malaria are better adapted because of the high frequency of this allele. Hence, evolution of human populations has occurred in the past, is occurring today, and will continue to occur. Changes that lead to alterations in allele frequencies are microevolutionary events. At the most basic level, evolution is a change in allele frequencies and genotype frequencies in a population from generation to generation. A population is evolving even if allele frequencies are fluctuating at just one chromosomal location. At the population level, therefore, evolution is a nearly continuous process.
Onaj o promenama u poslednjem veku. Tu o dugovecnosti ne govoris.
Ti pricas o dijeti i zivotnom stilu, kakve bre grupe?
Naravno da govorim o dugovecnosti, to sto ti nikako 20 strana da 'razumes' je tvoj problem.
Ti ni dva posta za redom ne mozes da otpratis diskusiju. Pricam o grupama populacije koje imaju isti zivotni stil i istu dijetu, i iste uslove - razvijace se na prosecno isti nacin, ako izuzmes extremne spoljne faktore.