Question

What map unit(Centimorgan) is adopted in the construction of genetic maps?

• A. A unit of distance between two expressed genes representing $10\%$ cross over
• B. A unit of distance between two expressed genes representing $100\%$ cross over
• C. A unit of distance between genes on chromosomes, representing $1\%$ cross over
• D. A unit of distance between genes on chromosome, representing $50\%$ cross over

Answer 1

The correct option is C A unit of distance between genes on chromosomes, representing $1\%$ cross over

$1$ map unit represent $1\%$ cross over.
Map unit is used to measure genetic distance. This genetic distance is based on average number of cross over frequency.

So, the correct answer is 'A unit of distance between genes on chromosomes, representing 1%

1% cross over'