Genetic variation comes from several sources. Genetic variation comes from two main sources: mutation and recombination. â¢ Mutation A mutation is a random change in the DNA of a gene. This change can form a new allele. Mutations in reproductive cells can be passed on to offspring. This increases the genetic variation in the gene pool.
The medial collateral ligament (MCL) is a broad, thick band that runs down the inner part of the knee, from the femur (thighbone) to about four to six inches from the top of the tibia (shinbone).The MCL's primary function is to prevent the leg from over-extending inward, but it also is part of the mechanism that stabilizes the knee and allows it to ...
Knee Ligaments. The knee ligaments can be split into two pairs, the collateral ligaments (around the sides of the joint) and the cruciate ligaments (inside the joint). Ligaments are thick fibrous bands like ropes and their job is to provide stability by holding bones together.nee Ligaments. The knee ligaments can be split into two pairs, the collateral ligaments (around the sides of the joint) and the cruciate ligaments (inside the joint). Ligaments are thick fibrous bands like ropes and their job is to provide stability by holding bones together.