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NCERT-Gregor Mendel, conducted hybridisation experiments on garden peas for seven years (1856-1863) and proposed the laws of inheritance in living organisms. Mendel published his work on inheritance of characters in 1865 butfor several reasons, it remained unrecognised till 1900.

NCERT-Gregor Mendel, conducted hybridisation experiments on garden peas for seven years (1856-1863) and proposed the laws of inheritance in living organisms. Mendel published his work on inheritance of characters in 1865 butfor several reasons, it remained unrecognised till 1900.

/ NCERT LINE BY LINE, pre-class, PRINCIPLES OF INHERITANCE AND VARIATION / By Prof. Siddharth Sanghvi

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Mendel’s Approach and Results

Mendel’s Approach and Results

Aspect of Mendel’s Approach Result
Application of statistical analysis Novological – New way to address Biological Problems by using Maths
Application of mathematical logic Increased reliability of inferences
Large sampling size Greater credibility of collected data
Experimentation on successive generations Confirmation of general rules of inheritance
Investigation of characters in garden pea plant Identification of basic framework of rules governing inheritance
Manifestation of opposing traits Establishment of basic principles of inheritance without the help of Microscope and Without the knowledge of Chromosome and Mitosis
One character at a time Methodical approach to studying one trait per experiment, allowing for clear observations and conclusions
Proper record keeping Organized documentation of experimental procedures and results, facilitating analysis and reproducibility
Reasons Behind Mendel’s Failure

Reasons Behind Mendel’s Failure

Reason for Mendel’s Failure Explanation
Lack of easy communication Communication methods were limited in the 19th century, hindering widespread publicity of Mendel’s work.
Disagreement with concept of genes as stable units Contemporaries did not accept Mendel’s idea of genes as stable and discrete units controlling traits.
Unacceptance of Mendel’s mathematical approach Biologists of Mendel’s time were resistant to the idea of using mathematics to explain biological phenomena.
Lack of physical proof for existence and composition of genes Mendel could not provide empirical evidence for the existence of genes or their composition.
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