Question

When two genes are situated very close to one another at a chromosome

• A. The percentage of crossing over between them is very high
• B. Hardly any cross-overs are produced
• C. No crossing over can take place
• D. Only double cross-overs can occur between them

Answer 1

The correct option is B Hardly any cross-overs are produced

When the genes are situated very close to one another genetic linkage is established. The closer the physical location of two genes on the DNA, the less likely they are to be separated by a crossing-over event.

So, the correct answer is 'Hardly any cross-overs are produced'.