kintamumas ir paveldimumas Flashcards

1
Q

genetika

A

biologinio mokslo saka, nagrineja paveldimuma ir kintamuma

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2
Q

paveldimumas

A

organizmo gebejimas paveldeti tam tikrus pozymius is tevu

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3
Q

kintamumas

A

organizmo gebejimas igauti nauju pozymiu. tolygus(pozymiai kinta tolygiai pvz ugis) ir netolygus(yra tik kelios pozymio israiskos pvz akiu spalva ausies forma)

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4
Q

gametos

A

lytines lasteles(kiausialastes ir spermatozoidai)

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5
Q

zigota

A

apvaisinta kiausialaste

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6
Q

genas

A

DNR dalis kodyojanti tam tikro baltymo sinteze

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7
Q

chromosoma

A

dnr su baltymais, susisukusi i spirale

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8
Q

chromosomu rinkinys

A

visos vienos lasteles chromosomos

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9
Q

homologines chromosomos

A

porines, viena is tevo kita is mamos

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10
Q

aleliniai genai

A

dominuojantys(A, stipresni) ir recesyviniai(a, silpnesni)

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11
Q

genotipas

A

organizme genai, ju kombinacija(Aa,AA,aa)

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12
Q

fenotipas

A

fiziniai pozymiai, nulemti genotipo

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13
Q

somatine lastele

A

nelytine, turi dviguba chromosomu rinkini 2n. susidaro po apvaisinimo

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14
Q

lytine lastele

A

kiausialaste ir spermatozoidas, turi vienguba chromosomu rinkini n

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15
Q

mitoze

A

somatines lasteles susidarimo budas. rezultatas - 2n chromosomu rinkinys

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16
Q

mejoze

A

lytiniu lasteliu susidarimo budas. resultatas-4lasteles po n chromosomu

17
Q

apvaisinimas

A

kiausialastes ir spermatozoido susijungimas

18
Q

autosomas

A

chromosomos, kurios vienodos ir pas vyra ir pas moteri 44

19
Q

homozigota

A

organizmas, kurio aleliniai genai vienodo stiprumo

20
Q

heterozigota

A

aleliniai genai, skirtingu stiprumu