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Chapters
1: Sexual Reproduction in Flowering Plants
2: Human Reproduction
3: Reproductive Health
UNIT VII : GENETICS AND EVOLUTION
▶ 4: Principles of Inheritance and Variation
5: Molecular Basis of Inheritance
6: Evolution
UNIT VIII : BIOLOGY IN HUMAN WELFARE
7: Human Health and Disease
8: Microbes in Human Welfare
UNIT IX : BIOTECHNOLOGY
9: Biotechnology : Principles and Processes
10: Biotechnology and its Applications
UNIT X : ECOLOGY
Chapter 11: Organisms and Populations
Chapter 12: Ecosystem
Chapter 13: Biodiversity and Conservation
![NCERT solutions for Biology [English] Class 12 chapter 4 - Principles of Inheritance and Variation - Shaalaa.com](/images/biology-english-class-12_6:ce500e6a9bab4985a3b5c99ed076f748.jpg "NCERT solutions for Biology [English] Class 12 chapter 4 - Principles of Inheritance and Variation")
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Solutions for Chapter 4: Principles of Inheritance and Variation
Below listed, you can find solutions for Chapter 4 of CBSE, Karnataka Board PUC NCERT for Biology [English] Class 12.
NCERT solutions for Biology [English] Class 12 4 Principles of Inheritance and Variation EXERCISES [Page 78]
Mention the advantages of selecting the pea plant for the experiment by Mendel.
Differentiate between the following:
Dominance and Recessive
Differentiate between the following:
Homozygous and Heterozygous
Differentiate between the following:
Monohybrid and Dihybrid
A diploid organism is heterozygous for 4 loci; how many types of gametes can be produced?
Explain the Law of Dominance using a monohybrid cross.
Define the following:
Test cross
Design a test-cross.
Using a Punnett square, workout the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.
When a cross is made between tall plant with yellow seeds (TtYy) and tall plant with green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be:
- Tall and green.
- Dwarf and green.
Two heterozygous parents are crossed. If the two loci are linked, what would be the distribution of phenotypic features in the F1 generation for a dihybrid cross?
Briefly mention the contribution of T. H. Morgan in genetics.
What is pedigree analysis?
Suggest how pedigree analysis can be useful?
How is sex determined in human beings?
A child has blood group O. If the father has blood group A and the mother has blood group B, work out the genotypes of the parents and the possible genotypes of the other offspring.
Explain the following term with an example.
Co-dominance
Explain the following term with an example.
Incomplete dominance
What is point mutation?
Give one example of point mutation.
Who had proposed the chromosomal theory of inheritance?
Mention any two autosomal genetic disorders with their symptoms.
Solutions for 4: Principles of Inheritance and Variation
NCERT solutions for Biology [English] Class 12 chapter 4 - Principles of Inheritance and Variation
Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Biology [English] Class 12 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Biology [English] Class 12 CBSE, Karnataka Board PUC 4 (Principles of Inheritance and Variation) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Biology [English] Class 12 chapter 4 Principles of Inheritance and Variation are Mendel's Laws > The Law of Dominance, Mendel's Laws > The Law of Segregation (Law of Purity of Gametes), Monohybrid Cross, Linkage and Recombination, Sex Determination, Sex Determination in Humans, Sex Determination in Honey Bees, Heredity and Variation, Punnett Square, Pedigree Analysis, Back Cross and Test Cross, Exceptions to Mendel's Principles > Co-Dominance, Gregor Johann Mendel – Father of Genetics, Mendel's Experiments on Inheritance, Exceptions to Mendel's Principles > Incomplete Dominance, Dihybrid Cross, Mendel's Laws > The Law of Independent Assortment, Chromosomal Theory of Inheritance, Polygenic Inheritance, Exceptions to Mendel's Principles > Pleiotropy, Mutations, Mendelian Disorders in Humans, Chromosomal Disorders or Abnormalities, Deoxyribonucleic Acid (DNA), Structure of Polynucleotide Chain, Packaging of DNA Helix, Search for Genetic Material, Griffith’s Experiment, Avery, McCarty and MacLeod’s Experiment, The Hershey-Chase Experiment, Properties of Genetic Material, The RNA World, DNA Replication, Conservative Replication, Dispersive Replication, Semi-Conservative Replication, Meselson and Stahl’s Experiment, Enzymes used in DNA Replication, Mechanism of DNA Replication, Reverse Transcription (Teminism), Transcription, Transcription Unit and the Gene, Process of Transcription in Bacteria, Process of Transcription in Eukaryotes, Genetic Code, Characteristics of the Genetic Code, Mutations and Genetic Code, tRNA – the Adapter Molecule, Translation, Regulation of Gene Expression, The Lac Operon, Human Genome Project, DNA Fingerprinting, Protein Synthesis.
Using NCERT Biology [English] Class 12 solutions Principles of Inheritance and Variation exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Biology [English] Class 12 students prefer NCERT Textbook Solutions to score more in exams.
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