Read the assertion and reason carefully to mark the correct option in question.
Assertion: Sub-metacentric chromosome has one shorter and one longer arm.
Reason: Metacentric chromosome have one very long and one very short arm.

A chromosome with one shorter arm and one longer arm is

Read the assertion and reason carefully to mark the correct option in question. Assertion: Secondary constriction gives appearance of small fragment called the satellite. Reason: Few chromosomes have non-staining secondary constriction at a variable location.

A chromosome with one extremely short and one very long arm is

A chromosome with one extremely short and one very long arm is

Read the assertion and reason carefully to mark the correct option in question. Assertion: Every chromosome essentially has a kinetochore on the sides of which centromeres are present. Reason: Based on the position of centromere or primary constriction chromosomes can be classified into five types.

A chromosome with only one arm is