Question

The phenomenon of closely placed genes being inherited together is

• A. Linkage
• B. Crossing over
• C. Gene interaction
• D. Qualitative inheritance

Answer 1

The correct option is A Linkage

• Linkage refers to the presence of two different genes on the same chromosome. Two genes that occur on the same chromosome are said to be linked, and those that occur very close together are tightly linked.
• Crossing over is the exchange of chromosome segments between non-sister chromatids during the production of gametes.
• When the expression of one gene depends on the presence or absence of another gene in an individual, it is known as gene interaction.
• The pattern of inheritance for a qualitative trait is typically monogenetic, which means that the trait is only influenced by a single gene. Inherited diseases caused by single mutations are good examples of qualitative traits.

So, the correct answer is 'Linkage'.