NCERT Solutions for Class 12 Biology - Chapter 4 Principles of Inheritance and Variation

NCERT Solutions for Class 12 Biology Chapter 4 Principles of Inheritance and Variation

Chapter 4 of biology class 12 NCERT solutions have been presented in a simple manner prepared by our expert teacher. The answers written are not lengthy but are short and in precise way. Topics such as Mendel’s experiment, why he opted for pea plants, homozygous and heterozygous, dominance and recessive genes, mono, and dihybrid, etc. are explained in this chapter. You will also learn to determine the number of gametes for a diploid organism, depending on whether it is homozygous or heterozygous. As well as with that, test cross, and monohybrid cross, are also discussed in detail in this chapter.

It is an important part of advanced biology, as individuals learn about how traits are passed on from parents to their offspring, and how heterozygous parents exhibit unique linkage. You will also get to know how to determine the combination of traits that an offspring might carry depending on the dominant and recessive genes of the parents.

Principles of inheritance and variation class 12 NCERT Solutions have been in a particular manner so that students find it easy to go through the text. The text with relevant diagrams and examples for easy learning. 

Important Topics Covered in the NCERT Solutions for Class 12 Biology Chapter 4

The chapter on Principles of Inheritance and Variation provides an overview into some of the most interesting concepts of mutation and inheritance. There are many applications of these concepts in the advanced studies of biology, especially in the field of genetics.

The important topics covered in the NCERT Solutions for this chapter are given down below. 

• Mendel’s Laws of Inheritance

• Genetic Disorders

• Mutation

• Sex Determination

• Inheritance of One Gene 

• Inheritance of Two Genes

A good understanding of all the topics and subtopics covered in CBSE Class 12 Biology chapter 4 is required to answer the questions logically in the 12th Board Biology exam.

NCERT Solutions for Class 12 Biology Chapter 4: Points to Remember

Below we have provided some of the important points to remember for this chapter to ace your exams. Students can refer to these points to recollect the important highlights of the chapter.

• Genetics is a branch of biology that deals with the principles of inheritance and its practices.

• The Monohybrid cross is the simplest cross performed by Mendel, and it is the cross made to study the inheritance of a single character.

• The reciprocal cross occurs when two genotypes or phenotypes are crossed with reversed sources of gametes in one cross.

• Recessive is when two, unlike unit factors, are present in one individual; one unit factor is dominant to the other, which is said to be recessive.

• Dihybrid cross is a cross between two individuals for studying the inheritance of two characters.

• Epistatic is a gene that masks another gene’s expression, and Hypostatic is a gene whose expression is masked by a non-allelic gene.

Key Features of NCERT Solutions for Class 12 Biology chapter 4

• Prepared by Biology subject experts as per the updated CBSE Class 12 syllabus 2024-25.

• Absolutely free to download on our website.

• Easy explanations are given for all questions given in the exercises. 

• Diagrams with proper labeling are provided for the answers in each chapter.

• All solutions are written in a concise manner as per the CBSE guidelines for the Class 12 Board examination.

Benefits of NCERT Solutions for Class 12 Biology chapter 4 Principles of Inheritance and Variation

• Download and refer to these NCERT Solutions for Class 12 Biology chapter 4 to get an understanding of the chapter.

• These NCERT Solutions are prepared by our subject experts in close reference to the NCERT textbook and some of the best reference books for Class 12 Biology. So, you can completely rely upon these NCERT Solutions for preparing this chapter.

• By solving and referring to these NCERT Solutions, you can become familiar with the types of questions expected in the exam and how to answer them.

• You can access these solutions online as well as can download the Solutions PDF for free for offline reference. Thus, You can study these solutions at any time from anywhere.