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201-225 GM2023

201-225 GM2023

Question 1 of 25

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201.CS Evaluati ce gameti rezulta prin nedisjunctia in meioza l aperechiidecromozomi 13 in spermatogeneza si in ce proportie:

Select one of the following:

a) 45,XY,-13(75%) 47,XY,+13(25%)
b) 45,XY,-13(25) 47,XY,+13(75%)
c) 23,X,-13 si 23,Y,-13(25%) 23,X,+13 si 23,Y,+13(75%)
d) 22,X,-13 si 22,Y,-13(25%) 24,X,+13 si 24,Y,+13(75%)
e) Nici unul din raspunsuri nu este corect

Explanation

Question 2 of 25

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202.CS Mozaicul cromozomic de tipul 47/46/45 se formeaza prin:

Select one of the following:

a) Nedisjunctie cromozomica in meioza l
b) Nedisjunctie cromatidiana in meioza ll
c) Nedisjunctie cromatidiana in mitoza
d) Nedisjunctie cromatidiana in mitoza si meioza ll
e) Nici unul din raspunsuri nu este corect

Explanation

Question 3 of 25

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203.CS Mozaicul cromozomic de tipul 47/46/45 se formeaza prin:

Select one of the following:

a) Nedisjunctie cromozomica in meioza l
b) Nedisjunctie cromatidiana in meioza ll
c) Nedisjunctie cromatidiana in prima mitoza a zigotului
d) Nedisjunctie cromatidiana in mitoza si meioza ll
e) Nici unul din raspunsuri nu este corect

Explanation

Question 4 of 25

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204. CS. Fenomenele de recombinare inter- si intracromozomialaseproducin :

Select one of the following:

a) Anafaza mitozei
b) Profaza si anafaza meiozei I
c) Metafaza si anafaza meiozei II
d) Profaza si metafaza meiozei I
e) Profaza si anafaza meiozei II

Explanation

Question 5 of 25

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205) CS. Mozaicul cromozomic de tipul 46/45 se formeaza prin:

Select one of the following:

a)Nedisjunctia cromozomica in meioza I
b)Nedisjunctia cromatidiana in meioza II
c)Intarziere anafazica in meioza I
d)Nedisjunctia cromatidiana in mitoza
e)Nici unul din fenomele mentionate mai sus

Explanation

Question 6 of 25

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206) CS. Indicati afirmatia corecta referitoare la nondisjunctia meiotica:

Select one of the following:

a)Este responsabila de anomaliile structural ale cromozomilor
b)Este responsabila de anomalii cromozomice in mosaic
c)Este responsabila de formarea triploidiilor
d)Nu afecteaza decat perechea de cromozomi 21
e)Poate surveni atat in prima cat si in a doua diviziune meiotica

Explanation

Question 7 of 25

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207) CS. Identificati in ce etapa a diviziunii meiotice are loc recombinareaintracromozomiala:

Select one of the following:

a)Anafaza meiozei II
b)Profaza meiozei I
c)Anafaza meiozei I
d)Metafaza meiozei II
e)Profaza meiozei II

Explanation

Question 8 of 25

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208) CS. Clivarea transversala a centromerului in mitoza blastomerilorducela aparitia :

Select one of the following:

a)Mozaicurilor cromozomice de tip 45/46
b)Gametilor cu un numar anormal de cromozomi
c)Celulelor somatice cu numar anormal de cromozomi
d)Mozaicurilor cromozomice de tip 46,Iso p / 46,Iso q
e)Mozaicurilor cromozomice de tip 46/46,Iso p/46,Iso q

Explanation

Question 9 of 25

1

209) CM Alegeti mecanismele posibile a tetrasomiei gonosomale detip48,XXYY:

Select one or more of the following:

a)Nedisjunctia la ambii gamete in MII
b)Nedisjunctia gonozomilor in spermatogeneza in MI si MII a cromozomului Y
c)Nedisjunctia dubla in ovogeneza a cromozomilor sexuali
d)Nedisjunctia cromozomilor sexuali la ambii gamete in MI
e)Nedisjunctia in spermatogeneza in MI si MII a cromozomului X

Explanation

Question 10 of 25

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210) CS Alegeti mecanismele posibile a pentasomiei gonosomale detip49,
XXXXY:

Select one of the following:

a)Nedisjunctia cromozomului X in MI si MII a spermatogenezei
b)Nedisjunctia cromozomului X in MI a spermatogenezei si in MII la ambii
gamete
c)Nedisjunctia dubla a cromozomilor sexuali in ovogeneza
d)Nedisjunctia cromozomilor sexuali in ovogeneza si intirzierea MI inspermatogeneza
e)Nedisjunctia dubla a ambilor cromozomi sexuali in spermatogeneza

Explanation

Question 11 of 25

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211) CM Alegeti mecanismele posibile a tetrasomiei gonosomale detip48,XXYY:

Select one or more of the following:

a)Nedisjunctia in MII la ambii gamete
b)Nedisjunctia gonozomilor in MI si cromatidelor cromozomului YinMII aspermatogenezei
c)Nedisjunctia cromozomilor sexuali in ovogeneza si intarzierea in MI inspermatogeneza
d)Nedisjunctia dubla a cromozomilor sexuali in ovogeneza
e)Nedisjunctia cromozomilor sexuali in MI la ambii gamete

Explanation

Question 12 of 25

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212)CM Alegeti frazele ce caracterizeaza variabilitatea:

Select one or more of the following:

a)Este o proprietate universala a organismelor vii
b)Este proprietatea organismelor vii de a transmite caracterele
c)Asigura diversitatea genetica a populatiei
d)Este asigurata numai de factori mutageni
e)Este asigurata de combinatii noi a materialului genetic

Explanation

Question 13 of 25

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213)CM Identificati care este importanta biologica a variabilitatii:

Select one or more of the following:

a)Asigura polimorfismul individual
b)Asigura selectia naturala
c)Nu intervine in aparitia bolilor genetice
d)Asigura adaptarea organismelor la diferite conditii de viata
e)Nu poate produce noi combinatii de material genetic

Explanation

Question 14 of 25

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214) CM Variabilitatea poate fi definita ca :

Select one or more of the following:

a)Proprietatea universal a organismelor de a obtine caractere noi
b)Proprietatea organismelor vii de a pastra si a transmite informatia genetica
c)Un fenomen determinat de factori ecologici si ereditari
d)Un process determinat exclusiv de factori teratogeni
e)Un process determinat numai de factori mutageni

Explanation

Question 15 of 25

1

215) CM Variabilitatea asigura:

Select one or more of the following:

a)Supravietuirea organismelor
b)Un polimorfism individual
c)Selectia naturala
d)Recombinarea genetica
e)Manifestarea unor stari patologice

Explanation

Question 16 of 25

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216) CM Selectati caracteristicile mutatiilor:

Select one or more of the following:

a)Apar in urma modificarilor materialului genetic
b)Provoaca aparitia unui fenotip nou
c)Conditioneaza modificari metabolice noi
d)Pot aparea spontan
e)Nu pot fi produse de factorii mediului

Explanation

Question 17 of 25

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217) CM Variabilitatea organismelor:

Select one or more of the following:

a)Este proprietatea universala a organismelor de a pastra si transmite informatia ereditara
b)Este proprietatea universala a organismelor de a-si modifica caracterele
c)Apare doar la actiunea factorilor mutageni
d)Poate fi ereditara si neereditara
e)Asigura adaptarea organismelor

Explanation

Question 18 of 25

1

218) CM Individualitatea fiecarei personae este determinate de :

Select one or more of the following:

a)Combinarea noua a genelor parentale la zigot
b)Carcaterul conditiilor de realizare a genotipului
c)Secvente unicale si inalt repetitive a molecului AND,mostenite de laparinti
d)Noi modificari a secventelor de AND aparute pe parcursul vietii
e)Nr diferit de cromozomi si gene la fiecare persoana

Explanation

Question 19 of 25

1

219) CM Alegeti frazele ce ceracterizeaza variabilitatea :

Select one or more of the following:

a)Este o proprietate universala a organismelor vii de a se schimba
b)Se exprima prin manifestarea diferitor carcatere la reprezentatii unor populatii
c)Asigura adaptarea la noile conditii de viata
d)Explica aparitia diferitor caractere ereditare de familia
e)Este insotita intotdeauna de schimbarile programului genetic

Explanation

Question 20 of 25

1

220) CM Mutatiile spontane se caracterizeaza prin :

Select one or more of the following:

a)Apar sub actiunea factorilor fizici,chimici si biologici
b)Sunt erori ale replicarii
c)Determina aparitia genelor letale
d)Apar cu o frecventa constanta
e)Nu pot fi prevazute

Explanation

Question 21 of 25

1

221) CM Variabilitatea fenotipica se caracterizeaza prin :

Select one or more of the following:

a)Modificari ale caracterelor in limitele normei de reactie
b)Modificari ale caracterelor in afara normei de reactie
c)Are rol adaptiv
d)Se poate produce doar prenatal
e)Apare pe parcusul vietii

Explanation

Question 22 of 25

1

222) CM Consecintele mutatiilor pot fi :

Select one or more of the following:

a)Pozitive
b)Letale si semiletale
c)Neutre
d)Intotdeauna apare un fenotip nou normal sau pathologic
e)Intotdeauna modificarea polipeptidului ,determinate de mutatie ,ducelamodificarea functiei proteinei corespunzatoare

Explanation

Question 23 of 25

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223) CM Mutatiile genomice pot fi :

Select one or more of the following:

a)Somatice
b)Autosomale
c)Partiale
d)Echilibrate
e)Punctiforme

Explanation

Question 24 of 25

1

224) CM Mutatiile genomice pot fi :

Select one or more of the following:

a)Inlantuite cu cromozomul X
b)Dinamice
c)Induse
d)Partiale
e)Dominante

Explanation

Question 25 of 25

1

225) CM Mutatiile cromozomiale de structura pot fi :

Select one or more of the following:

a)Spontane
b)Neutre
c)Letale
d)Dominante
e)Neechilibrate

Explanation