Class 12 Biology - Chapter Principles of Inheritance and Variation NCERT Solutions | Briefly mention the contribution of T.H.
Briefly mention the contribution of T.H. Morgan in genetics.
Morgan’s work is based on fruit flies (Drosophila melanogaster). He formulated the chromosomal theory of linkage. He defined linkage as the co-existence of two or more genes in the same chromosome and performed dihybrid crosses in Drosophila to show that linked genes are inherited together and are located on X-chromosome. His experiments have also proved that tightly linked genes show very low recombination while loosely linked genes show higher recombination.
More Questions From Class 12 Biology - Chapter Principles of Inheritance and Variation
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- Q:-
Explain the following terms with example
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- Q:- Differentiate between the following −
(a) Dominance and Recessive
(b) Homozygous and Heterozygous
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Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
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(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
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What is meant by monosporic development of female gametophyte?
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