Mendelian Genetics and Heredity - Applications

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This section focuses on the practical applications of Mendelian genetics in understanding inheritance patterns, genetic disorders, and breeding strategies. It is designed for Class 11–12 students, NEET aspirants, and undergraduate learners to connect Mendelian principles with real-world biological and medical contexts.

In this section, you will study:

  • Application of Mendelian laws in predicting inheritance of traits

  • Use of genetic crosses in plant and animal breeding

  • Understanding inherited genetic disorders through Mendelian patterns

  • Application of Mendelian principles in pedigree analysis

  • Role of heredity concepts in genetic counseling

  • Use of classical genetics in crop improvement and animal husbandry

  • NCERT-based application questions, examples, and exam-oriented problems

The content is structured to enhance application-based understanding, strengthen logical reasoning, and help students confidently handle real-world and case-based questions in school examinations, NEET, and undergraduate assessments.

Understand how Mendelian genetics forms the foundation for heredity studies, medical genetics, and breeding practices beyond the classroom.

Q. In a dihybrid cross, what is the expected phenotypic ratio of the offspring?
  • A. 1:1
  • B. 3:1
  • C. 9:3:3:1
  • D. 1:2:1
Q. What is the basic unit of heredity in living organisms?
  • A. Chromosome
  • B. Gene
  • C. DNA
  • D. RNA
Q. What is the expected genotypic ratio from a monohybrid cross?
  • A. 1:1
  • B. 3:1
  • C. 1:2:1
  • D. 9:3:3:1
Q. What is the term for an observable characteristic of an organism?
  • A. Genotype
  • B. Phenotype
  • C. Allele
  • D. Locus
Q. Which of the following is a characteristic of recessive alleles?
  • A. Always expressed in the phenotype
  • B. Only expressed in homozygous condition
  • C. Expressed in heterozygous condition
  • D. Dominates over all other alleles
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