The reason for deviation from Mendel’s dihybrid cross in T.H. Morgan's experiment is
The reason for deviation from Mendel’s dihybrid cross in T.H. Morgan's experiment is
Pleiotropy
Linkage
Overlapping
Polygenic Inheritance
The Correct Option is B
Solution and Explanation
The reason for the deviation from Mendel's dihybrid cross in T.H. Morgan's experiment is "Linkage."
In Morgan's experiments with fruit flies (Drosophila melanogaster), he observed that certain traits that were expected to segregate independently according to Mendel's principles actually appeared together more often than expected. This phenomenon occurred because the genes responsible for these traits were located close to each other on the same chromosome, resulting in their linkage.
Linkage refers to the tendency of genes on the same chromosome to be inherited together as a unit, rather than independently assorting during meiosis. This discovery of linkage led to the understanding of genetic recombination and the concept of genetic mapping.
Top CUET Biology Questions
Select the statements that are CORRECT regarding patterns of biodiversity.
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List - I
List - II
A Streptokinase I Blood-Cholestrol lowering agents B Cyclosporin II Clot Buster C Statins III Propionibacterium sharmanii D Swiss Cheese IV Immuno suppressive agent Which of the following option determines percolation and water holding capacity of soils ?
Top CUET The molecular basis of inheritance Questions
Replication of DNA is characterised by :
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Top CUET Questions
Select the statements that are CORRECT regarding patterns of biodiversity.
(A) Species diversity increases as we move away from the equator towards the poles(B) The tropical Amazon rain forest in South America has the greatest biodiversity on earth.(C) There is more solar energy available in the temperate region than tropics.(D) Tropical environments are less seasonal relatively more constant and predictableWhich of the following hormone is not produced by placenta ?
- Individuals with karyotype of 44+XXY having overall masculine development with few feminine development like Gynaecomastia has _______ chromosomal disorder.
- Match List - I with List - II.Choose the correct answer from the options given below :
List - I
List - II
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Concepts Used:
The Molecular Basis of Inheritance
DNA Replication:
DNA synthesis is commenced at particular points within the DNA strand referred to as ‘origins’, which are certain coding regions. There are numerous origin sites, and when replication of DNA starts, these sites are mentioned as replication forks. Within the replication, the complex is the enzyme DNA Helicase, so that they can be utilized as a template for replication. DNA Primase is another enzyme that's essential in DNA replication.
RNA:
Ribonucleic acid (RNA) is an essential biological macromolecule that exists all together in biological cells. It is principally involved in the synthesis of proteins, that carry the messenger instructions from DNA, which itself contains the genetic instructions needed for the event and maintenance of life. In some viruses, RNA, in spite of DNA, carries genetic information.
Genetic Code:
Genetic code is the term we use in the manner that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the ribosome, the cellular machinery, can read them and switch them into a protein. In the ordering, every three nucleotides during a row count as a triplet and code for one amino alkanoic acid.
Read More: Molecular Basis of Inheritance