gen kromosom dna ok
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8/17/2019 Gen Kromosom Dna Ok
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GEN, DNA DAN KROMOSOM
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GENDNAKROMOSOM
INILAHPEMBAHASAN KITA..
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KROMOSOM
Kromosom-Gen-DNA sangatberkatan sat! sama "an.
Ketgan#a bera$a $ $a"amn!k"e!s $ar seta% se" $
$a"am t!b!& seta% mak&"!k&$!%. Se"an t!, ketgan#a
mem%!n#a '!ngs tersen$r$a"am %e(arsan s'at
)&ere$tas* $ar n$!k keket!r!nan-ket!r!nann#a.
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Nah, ini dia hubungan antaraDNA dengan kromosom
DNA Proten Hston-non &ston
)n!k"eosom*
N!k"eosom n!k"eosom
)so"eno$*
So"eno$ so"eno$
)kromatn*
Kromatn kromatn
)kromat$*
Kromat$ kromat$
)kromosom*
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S!at! Kromosom t! ter$r$ar
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+ T%e kromosom
Gonosom
)Kromosom ke"amn*
/A!tosom
)Kromosomt!b!&*
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JUMLAH KROMOSOM MANUSIA
Man!sa %!n#a 01 kromosom, ter$r$ar 22 %asang a!tosom )AA* $an 3%asang gonosom )4/*.
R!m!s kromosom5
6 )Lak-"ak* 5 22 AA/7 )Perem%!an* 5 22 AA
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Kromosom organsme "an..
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GN
Gen )$ar ba&asa Be"an$a : gen*a$a"a& !nt %e(arsan s'at bagorgansme &$!% #ang ter$a%at $kromosom $an mer!%akan !nt
&ere$tas terke8".Besar gen kra-kra 0-9: ;m.
Ist"a& gen $kem!kakan o"e& !"
Johansen )3=:=* sebaga %enggant$etermnan, 'aktor ata! e"emen #ang$kem!kakan o"e& Gregor Men$e".
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Letak GENGen $a"am kromosom ter"etak
%a$a man8-mank #ang $seb!tkromomer ata! n!k"eosom.
Mank-mank n ber>e>er "!r!s
)"near* se%an>ang %oroskromatn.
Letak s!at! gen %a$a kromosom
$seb!t "ok!s.Lokus gen ter$a%at %a$a ta%kromosom.
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Se%ert n"a& gen $ $a"amkromosom
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Smbo" GEN
Smbo" gen #ang men!n>!kkan
karakter reses' basan#a $t!"s$engan &!r!' ke8".
Smbo" gen #ang men!n>!kkankarakter $omnan $t!"s $engan&!r!' besar
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Msa"n#a a$a seorang #ang 8ebo" ata!
dwarf reses'. Maka $a%at $smbo"kangen #ang ter$a%at $ t!b!& orang
terseb!t a"a& d.
Se$angkan, !nt!k karakter #ang t$ak
8ebo" ata! norma", $a%at $smbo"kan$engan &!r!' D.
Pasangan #ang $a%at ter>a$ $ar
smbo" gen 8ebo" $an norma" a$a"a& DD,Dd, $an dd .
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ALEL
A"e" $%erkena"kan o"e& !"#ateson
$an "R"Saunders %a$a ta&!n3=:2.
A"e" berasa" $ar kata "atn allelon#ang berart bent!k "an.
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Msa"n#a,,
A$a 2 gen, #at! 5
Gen A ber%eran !nt!k men!mb!&kan
karakter %gmentas k!"t se8ara norma")k!"t $a%at membent!k me"ann*.
Gen a menmb!"kan karakter a"bnsme)#at! kea$aan $mana k!"t t$ak$a%at membent!k me"ann ? a"bno*.
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Maka..
Gen a menmb!"kan karakter resesi$ ,#ang berart eks%res gen a $t!t!%)t$ak mem"k e'ek #ang >e"as %a$a%enam%akan organsme* b"a bersama-
sama $engangen A. Seba"kn#a,,
Gen A )$a%at membent!k me"ann*$seb!t dominan ter&a$a% gen a karena
gen A $eks%reskan se%en!&n#a %a$a%enam%akan @sk )'enot'* organsmeterseb!t.
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Intn#a,,
A"e" mer!%akan bent!kgan$an#a gen.
Msa" s!at! gen A. Makaa"e"n#a a$a"a& gen A $an a
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Letak $an smbo" GEN
ka ter$a%at $!a gen, msa"n#agen B $an b #ang ter"etak %a$a
"ok!s #ang sama $ar s!at!kromosom &omo"og. Maka, gensea"e" terseb!t &ar!s $ber
smbo" $engan &!r!' #ang samateta% $be$akan
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%embedaann&a simbo'n&a a(abi'ada'am )
Kea$aan homo*igot +a'e' identik5
B"a %engar!& ke$!a a"e" !nt!k men!mb!&kans!at! karakter #ang sama $omnann#a, makake$!a a"e" terseb!t $t!"s $engan &!r!' #angsama )BB ata! bb*
kea$aan hetero*igot +dua a'e' &ang
berbeda 5 >ka %engar!&n#a menmb!"kan s!at! karakter
#ang berbe$a, maka ke$!a a"e" terseb!t $a%at$t!"s Bb
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-enoti( a$a"a& karakterstk ata!8r #ang n#ata $an $a%at $"&at
%a$a s!at! n$+$!.
Genoti( a$a"a& s!s!nan genets
s!at! karakter #ang $m"k s!at!n$+$!.
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DNAAsam $eoksrbon!k"eat
)DNA* ata! $a"am Ba&asaInggrs #at!deoxyribonucleic acid mer!%akan tem%at%en#m%anan n'ormasgenetk #ang akan$ko$ekan $a"am ba&asa
kma( $an $%ro$!ks $$a"am sem!a se" t!b!&.