Write a note on linkage.
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Solution and Explanation
Step 1: Linkage refers to the tendency of genes that are located close to each other on the same chromosome to be inherited together during meiosis.
Step 2: Genes that are linked show a pattern of inheritance different from Mendel's law of independent assortment. Linked genes do not segregate independently but are transmitted together to offspring.
Step 3: The strength of linkage depends on the distance between the genes on the chromosome. The closer the genes are, the stronger the linkage.
Top Questions on Genetics
Match the terms in Column-I with their description in Column-II and choose the correct option.
- (a) Write two closely linked genes that control \(\alpha\)-thalassemia.
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Reason (R): Higher parental gene combinations can be attributed to crossing over between two genes.
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