3.2 mekanisme perwarisan sifat
DESCRIPTION
Science Form 43.2 Principles and Mechanism of InheritanceTRANSCRIPT
3.2 PRINSIP & MEKANISME PERWARISAN SIFAT
GEN DOMINAN & GEN RESESIF
GEN DOMINANGEN DOMINAN
Gen kuat yang dapat melindungi ciri gen resesif yang berpasangan
dengannya
GEN DOMINANGEN DOMINAN
Ditandakan dengan huruf besar
GEN DOMINANGEN DOMINAN
Ciri-ciri dominan ditonjolkan disebabkan kehadiran sepasang gen dominan atau
salah satu daripadanya
GEN RESESIFGEN RESESIF
Gen lemah yang hanya menonjolkan ciri-cirinya jika gen itu berpasangan
sesamanya
GEN RESESIFGEN RESESIF
Ditandakan dengan huruf kecil
GEN RESESIFGEN RESESIF
Ciri-ciri resesif ditonjolkan disebabkan kehadiran kedua-dua gen resesif
CONTOH SIFAT DOMINAN & SIFAT RESESIF PADA MANUSIA
GENOTIP DAN FENOTIP
Genotypic combination Phenotype (hair texture)
CC (homozygous) Curly hair
Cc (heterozygous) Curly hair
cc (homozygous) Straight hair
GREGOR JOHANN MENDELGREGOR JOHANN MENDEL
Saintis pertama yang mengkaji kebakaan secara sistematik
Exercise 1
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
• What is the probability of Rr X Rr producing wrinkled seed?
• What is the probability of Yy X yy producing green seed?
MENDELIAN TRAITS IN HUMANS
Is it possible for a brown-eyed parents to have a blue-eyed child??