
Pewarisan Sifat
Presentation
•
Science
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9th Grade
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Practice Problem
•
Hard
sunarti sunarti14@guru.smp.belajar.id
Used 4+ times
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12 Slides • 0 Questions
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by sunarti
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1.Gen : Segmen tertentu DNA (yang ada di kromosom) yang menentukan sifat keturunan tertentu.
2.Kromosom :Faktor pembawa sifat keturunan dari induk kepada anaknya.
3. PARENTAL :Induk
4. FILIAL (F) : Keturunan.
5. Keturunan/generasi pertama (F-1) Keturunan/generasi kedua (F-2)
6.GENOTIF : Sifat yang di bawa oleh gen, tidak tampak dari luar.
7.FENOTIF : Sifat yang tampak dari luar, hasil perpaduan antara sifat genotif dengan lingkungan.
8.DOMINAN : Sifat yang lebih kuat/banyak muncul pada keturunan
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1. Persilangan Monohibrida
2. Persilangan Dihibrida
3. Persilangan Trihibrida
4. Penyakit Menurun pada Manusia
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Contoh :
1.Tumbuhan berbunga kuning disilangkan dengan tumbuhan berbunga merah.
2. Kucing berbulu putih dikawinkan dengan kucing berbulu hitam.
3. Wanita berambut kriting kawin dengan laki-laki berambut lurus.
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Contoh :
Kelinci berwarna hitam berbulu halus disilangkan dengan kelinci berwarna putih berbulu kasar
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- Merupakan persilangan satu sifat beda, dimana sifat resesif terkalahkan atau tertutupi oleh sifat dominan
Bila ada dua gen resesif dan gen dominan ada bersama-sama, maka sifat resesif tdk muncul.
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Jawab :
Parental (P) Tinggi x rendah TT tt
Gamet T x t
Keturunan 1 (F1) Tt ( tinggi )
P2 : Tt x Tt
gamet T T t t
F2 = ……..?
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TT : Tt : tt
1 : 2 : 1
perbandingan Fenotif nya :
Tinggi : Rendah
3 : 1
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