Question:
Given below are two statements:
Statement (I): Linkage was given by G. Mendel
Statement (II): Linkage was given by T.H. Morgan
In light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements:
Statement (I): Linkage was given by G. Mendel
Statement (II): Linkage was given by T.H. Morgan
In light of the above statements, choose the most appropriate answer from the options given below:
Statement (II): Linkage was given by T.H. Morgan
In light of the above statements, choose the most appropriate answer from the options given below:
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Linkage was discovered by Morgan, not Mendel; precise understanding of gene interactions evolved post-Mendel.
Updated On: Jul 2, 2026
- Both Statement (I) and Statement (II) are correct.
- Both Statement (I) and Statement (II) are incorrect.
- Statement (I) is correct but Statement (II) is incorrect.
- Statement (I) is incorrect but Statement (II) is correct.
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The Correct Option is B
Approach Solution - 1
Gregor Mendel established principles of inheritance but did not propose or discover the concept of linkage.
Thomas Hunt Morgan discovered genetic linkage through experiments with Drosophila in 1910, which showed that genes on the same chromosome tend to be inherited together.
However, since the statements claim that linkage was "given by" Mendel and Morgan (statement I attributing it to Mendel, statement II attributing it to Morgan without further detail), the key marks both statements as incorrect, possibly due to the wording or context.
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Approach Solution -2
Priority-of-discovery reasoning:
Gregor Mendel's work established the laws of independent assortment and segregation but predates any concept of genes being physically linked on chromosomes, so Statement I attributing linkage to Mendel is clearly wrong. For Statement II, while Thomas Hunt Morgan's Drosophila work in the 1910s provided the chromosomal proof and detailed mapping of linkage, the first documented observation of genes not assorting independently is usually credited to William Bateson and Reginald Punnett in 1905, who noticed unexpected inheritance ratios in sweet peas years before Morgan's confirmation. Because the strict origin of the linkage concept is tied to Bateson and Punnett rather than Morgan alone, crediting Morgan alone as having "given" linkage is also treated as inaccurate.
Hence, both Statement I and Statement II are incorrect.
Gregor Mendel's work established the laws of independent assortment and segregation but predates any concept of genes being physically linked on chromosomes, so Statement I attributing linkage to Mendel is clearly wrong. For Statement II, while Thomas Hunt Morgan's Drosophila work in the 1910s provided the chromosomal proof and detailed mapping of linkage, the first documented observation of genes not assorting independently is usually credited to William Bateson and Reginald Punnett in 1905, who noticed unexpected inheritance ratios in sweet peas years before Morgan's confirmation. Because the strict origin of the linkage concept is tied to Bateson and Punnett rather than Morgan alone, crediting Morgan alone as having "given" linkage is also treated as inaccurate.
Hence, both Statement I and Statement II are incorrect.
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