Cercetatorii germani au descoperit secretul inteligentei umane. „Vinovate” de acest progres sunt femeile, mai exact acel cromozom X in plus, cu care au fost dotate de Mama Natura.
Umanitatea datoreaza sexului frumos inteligenta. Cel putin asa sustine o echipa de cercetatori germani de la Universitatea din Ulm, care au ajuns la concluzia ca facultatile intelectuale se concentreaza intr-un cromozom X, preponderent la femei.
„Umanitatea – mai ales barbatii – ar trebui sa fie recunoscatoare femeilor”, scrie revista New Scientist. Cu 30 de ani in urma, teoria potrivit careia inteligenta se transmite de la o generatie la alta prin intermediul cromozomului X era sustinuta de un om de stiinta american. Acum, un grup de cercetatori de la Universitatea din Ulm – Germania, a studiat genele legate de capacitatile mentale si a descoperit ca acestea se afla cu preponderenta in cromozomii de tip X. Femeile au o pereche de cromozomi X, barbatii au unul X si unul Y. Cateva din genele la care fac referire cercetatorii sunt legate de formatiunile terminale nervoase din cerebel: se banuieste ca acestea genereaza inteligenta.
„Un lucru este sigur: genele din cromozomul X sunt „insarcinate” cu dezvoltarea inteligentei. In plus, studiile din ultimii ani au demonstrat ca aproximativ 1.000 de gene sunt „vinovate” de aparitia anumitor boli grave. Statistic vorbind, de trei ori mai multi cromozomi X sunt responsabili de carente genetice sau aparitia bolilor, decat cromozomi Y. Dupa cum se stie, barbatii au 46 de cromozomi X si tot atatia Y, iar femeile au 46 de perechi de cromozomi X. De aceea, la barbati, orice modificare genetica a unui cromozom X conduce la o reactie in lant si instalarea directa a unei boli. La femei, cand are loc o modificare identica, defectul este contracarat de catre cromozomul Y. Acest lucru reiese foarte clar din unele boli ale sangelui, de care sufera mai ales barbatii. La fel, cazurile de retardare mentala apar mai des la barbati decat la femei”, explica cercetatorul Frank Haffner.
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