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Handwritten notes of class 12th biology chapter 5: Principles of Inheritance and Variations part 1

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Subject :Biology
Class :12th
Chapter :Principles of Inheritance and Variations
Language :English
Pages :49
PDF size :21 MB
I recently cracked NEET last year and these are my personal handwritten notes which I prepared while watching useful content on popular NEET and JEE based YouTube channels and referring other helpful books including ncert. This will definitely help you crack your state board as well as entrance exams.
Believe me these are the best notes for NEET .It includes lot of concepts explained in a much easier and logical format as compared to ncert.

I prepared them while watching educational videos on YouTube by one of the finest teachers available online. I have included a lot of extra detailed content which is not provided in ncert, but at the same time is very important for NEET level preparation. This will surely help you. All the best 👍

Handwritten notes of class 12th biology chapter 5: Principles of Inheritance and Variations part 1

  1. Generally important terms
  2. Historical aspect
  3. Pre- Mendelian ideas about Inheritance                                                 a) Theories of Blending Inheritance
  4. Father of Genetics -Gregor Johann Mendel                                                       a) Mendel’s Experimental technique.     b) Hybridisation                                       c) Reasons for non recognition of Mendel’s work                                           d) Rediscovery of Mendel’s work              e) Reasons for Mendel’s success .            f) The changing concept of Inheritance                                                 g) Mendel’s laws of Inheritance
  5. Post Mendelian Discoveries                    a) Incomplete dominance.                          -Four o’clock plant, Snapdragon,       Andulasian fowls                                           -1.Tay Sachs disease .              -2.Familial Hypercholesterolemia            b) Codominance
  6. Multiple Alleles                                         a) Eye colour in Drosophila                   b) Coat colour in Rabbits
  7. Lethal Genes                                             a) Dominant lethal genes                       b) Recessive lethal genes                        c) Conditional lethal genes
  8. Pleiotropy                                                   a) Drosophila                                            b) Pea plant                                                c) Cotton                                                     d) Pleiotropy in Humans                           -Sickle cell Anemia                                    -Phenylketonuria                                         -Kartagener’s syndrome                            -Cystic Fibrosis
  9. Quantitative inheritance                          e. g. Kernel colour in wheat
  10. Intergenic Interaction                              a) Epistasis – Dominant and Recessive     b) Duplicate Genes
  11. Each of the concepts listed above are called explained in detail as per the requirement of NEET .

Handwritten notes of class 12th biology chapter 5: Principles of Inheritance and Variations part 1

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