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Principles of Inheritance and Variations — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variations2 Marks
Question
Briefly mention the contribution of T.H. Morgan in genetics.
✓

Answer

T.H. Morgan contribution in genetics :
(i) Morgan found fruit fly Drosophila melanogaster to be better material for experiments (on genetics as it was easy to rear and multiply) it throughout the year.
(ii) He established the presence of genes over the chromosomes.
(iii) Morgan established the principle of linkage and crossing over.
(iv) He discovered sex - linkage and criss - cross inheritance.
(v) He developed the technique of chromosome mapping.

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