dasar-dasar genetika @
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dasar dasar genetikaTRANSCRIPT
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• Materi genetic (genom) pada sel eukariotik
terdapat dalam inti dan terlihat sebagai massa
benang bila dilihat dengan mikroskop electron
• Benang kromatin tersebut terdiri dari DNA dan
protein histon
• Benang DNA dan protein histon yang dililitnya
disebut nukleosom
Narti Fitriana
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Narti Fitriana
DNAProtein histon
Nukleosoma
Solenoid
Kromatin
Kromosom
Kromatid
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Narti Fitriana
StrukturKromosom
Narti Fitriana
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Tipe Kromosom
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Kromosom mh eukariotik (kiri) dan prokariotik (kanan)
Narti Fitriana
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Gen
SegmenDNA
oMengontrol struktur danfungsi sel
oMewariskan sifatoMengontrol sintesis
polipeptida
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Narti Fitriana
Nukleosida: senyawa kimia yang terbentukdari ikatan molekul guladengan basa nitrogen
Nukleotida: senyawa kimia yang terbentukdari gula basa nitrogen danAsam Fosfat
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Narti Fitriana
Struktur DNA
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StrukturDNA
BasaNitrogen
GulaPentosa
Fospat
Purin
Pirimidin
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