Cariotipul uman normal si patologic

Question 1

Cati cromozomi are cariotipul normal

Answer 1

are 46 de cromozomi printre care se numara 44 autozomi si 2 heterozomi

Question 2

Modificarile/aberatiile numerice cromozomale sunt provocate de-

Answer 2

accidente in mitoza/meioza.

Question 3

1.NUMERICE
-ploiploidii=

Answer 3

efect letal

Question 4

-aneuploidii=

Answer 4

sindroame

Question 5

Aberatii numerice pot fi
A. AUTOZOMALE, de ex: 1.MONOSOMIA-
2.TRISOMIA-

Answer 5

1.lipsa unui cromozom dintr-o pereche; 2n=45
2.un cromozom suplimentar intr=o pereche; 2n=47

Question 6

trisomia 21/sindrom down
caracteristicile=

Answer 6

=ochii oblici,obraz plat, nas scurt, anomalii cardiace,digestive, inapoiere mintala)

Question 7

care este cauza?(trisomiei 21)

Answer 7

non-disjunctia, adica separarea cromozomilor in meioza.

Question 8

B. heterozomale
-mai frecvente decat cele autozomale.