3.2 mekanisme perwarisan sifat
DESCRIPTION
Science Form 43.2 Principles and Mechanism of InheritanceTRANSCRIPT
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3.2 PRINSIP & MEKANISME PERWARISAN SIFAT
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GEN DOMINAN & GEN RESESIF
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GEN DOMINANGEN DOMINAN
Gen kuat yang dapat melindungi ciri gen resesif yang berpasangan
dengannya
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GEN DOMINANGEN DOMINAN
Ditandakan dengan huruf besar
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GEN DOMINANGEN DOMINAN
Ciri-ciri dominan ditonjolkan disebabkan kehadiran sepasang gen dominan atau
salah satu daripadanya
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GEN RESESIFGEN RESESIF
Gen lemah yang hanya menonjolkan ciri-cirinya jika gen itu berpasangan
sesamanya
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GEN RESESIFGEN RESESIF
Ditandakan dengan huruf kecil
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GEN RESESIFGEN RESESIF
Ciri-ciri resesif ditonjolkan disebabkan kehadiran kedua-dua gen resesif
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CONTOH SIFAT DOMINAN & SIFAT RESESIF PADA MANUSIA
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GENOTIP DAN FENOTIP
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Genotypic combination Phenotype (hair texture)
CC (homozygous) Curly hair
Cc (heterozygous) Curly hair
cc (homozygous) Straight hair
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GREGOR JOHANN MENDELGREGOR JOHANN MENDEL
Saintis pertama yang mengkaji kebakaan secara sistematik
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Exercise 1
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Figure shows the inheritance of height in plants.a) If T represents the dominant allele for tallness & t the recessive
allele for dwarfness, complete the information given in the figure.b) If the F1, generation plants are self-pollinated, draw a genetic
diagram to find out the percentage of the offspring of F2 generation that would be a tall plant
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• What is the probability of Rr X Rr producing wrinkled seed?
• What is the probability of Yy X yy producing green seed?
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MENDELIAN TRAITS IN HUMANS
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Is it possible for a brown-eyed parents to have a blue-eyed child??
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