Basic Principles of Inheritance
CBSE · Class 11 · Biotechnology
Summary of Basic Principles of Inheritance for CBSE Class 11 Biotechnology. Key concepts, important points, and chapter overview.
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Overview
Basic Principles of Inheritance explains how traits pass from parents to offspring through genes on chromosomes. Heredity is the transmission of characters from one generation to the next, and genetics is the study of heredity and variation. Mendel’s pea plant experiments built the foundation of inh
Key Concepts
Heredity is the transmission of characters
Heredity is the transmission of characters from one generation to the next. Genetics is the study of the scientific facts of heredity and variation. T
Gregor Johann Mendel
Gregor Johann Mendel, the father of genetics, used Pisum sativum because it is an annual plant with perfect bisexual flowers and many contrasting char
A monohybrid cross considers one pair
A monohybrid cross considers one pair of contrasting characters, such as tall and dwarf. In a tall × dwarf cross, all F1 plants are tall. In F2, the p
A test cross is used
A test cross is used to find the genotype of a dominant phenotype by crossing it with a recessive individual. The appearance of dwarf offspring shows
Incomplete dominance occurs when the heterozygote
Incomplete dominance occurs when the heterozygote shows an intermediate phenotype. In Mirabilis jalapa, red RR crossed with white rr gives pink Rr. Se
Learning Objectives
- Understand heredity, variation, and genetics
- Explain Mendel’s experiments with pea plants
- Describe monohybrid and dihybrid crosses and their ratios
- Apply the laws of dominance, segregation, and independent assortment
- Explain linkage, crossing over, and recombination
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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