BioNotes

# BioNotes > A free, high-performance biological notes archive and study portal designed for Class 5–12 (ICSE, ISC, CBSE). ## Class 12 - [CRISPR and Gene Editing](https://bionotes-liard.vercel.app/docs/Class-12/CRISPR_and_Gene_Editing/): Advanced supplementary note on CRISPR-Cas9 for Class 12 - [CRISPR and Gene Editing - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/CRISPR_and_Gene_Editing_CBQ/): Practice questions testing deep understanding of CRISPR-Cas9 mechanics and ethical implications. - [Environmental Issues - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Environmental_Issues_Legacy_CBQ/): Practice questions testing deep understanding of global warming, ozone depletion, and eutrophication. - [Gene Therapy Applications - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Gene_Therapy_Applications_CBQ/): Practice questions testing deep understanding of vectors, ADA deficiency, and genetic treatments. - [Scientists and Their Contributions - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/ISC_Scientists_and_Their_Contributions_and_List_CBQ/): Practice questions testing deep understanding of historical biological discoveries. - [Sexual Reproduction in Flowering Plants - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_1_Chapter_1_Sexual_Reproduction_in_Flowering_Plants_CBQ/): Practice questions testing deep understanding of microsporogenesis, megasporogenesis, and apomixis. - [Human Reproduction - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_1_Chapter_2_Human_Reproduction_CBQ/): Practice questions testing deep understanding of gametogenesis, menstrual cycle, and embryonic development. - [Reproductive Health - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_1_Chapter_3_Reproductive_Health_CBQ/): Practice questions testing deep understanding of contraceptive methods, ART, and STIs. - [Principles of Inheritance and Variation - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_2_Chapter_1_Principles_of_Inheritance_and_Variation_CBQ/): Practice questions testing deep understanding of genetic disorders, linkage, and Mendelian deviations. - [Molecular Basis of Inheritance - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_2_Chapter_2_Molecular_Basis_of_Inheritance_CBQ/): Practice questions testing deep understanding of DNA replication, transcription, and translation. - [Evolution - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_2_Chapter_3_Evolution_CBQ/): Practice questions testing deep understanding of Darwinian selection, Hardy-Weinberg, and speciation. - [Human Health and Diseases - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_3_Chapter_1_Human_Health_and_Diseases_CBQ/): Practice questions testing deep understanding of immunity, HIV/AIDS, and cancer. - [Microbes in Human Welfare - Competency Based & Assertion-Reasoning Questions](https://bionotes-liard.vercel.app/docs/Class-12/Competency-Based-Questions/Unit_3_Chapter_2_Microbes_in_Human_Welfare_CBQ/): Practice questions testing deep understanding of biocontrol, biofertilizers, and industrial microbes. - [Biotechnology: Principles and Processes - Competency Based & Assertion-Reasoning Questions](https://bion […truncated]