Which of the Following is the Main Source of Variation

Question

Which of the following is the main source of variation in microsatellites?
A) chemicals in water
B) chemicals in food
C) ultraviolet light
D) background radiation
E) faulty DNA replication

Accepted Answer

Microsatellites are short repeated DNA sequences, and the variation in the number of repeats is mainly due to the errors that occur during DNA replication. These errors can be caused by various factors, such as DNA polymerase slippage or unequal crossing over, leading to a difference in the number of repeats between individuals. Other options like A, B, C, and D do not directly affect microsatellite variation.