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 ...
MCL / LCL Sprain or Tear MCL / LCL Sprain or Tear. The medial collateral ligament (MCL) and lateral collateral ligament (LCL) are two of four ligaments in the knee that provide stability to the knee joint, along with the ACL and PCL. The MCL is located on the inner side of the knee and the LCL is located on the outer side and these two ligaments work to control the side ...