The length of the hockey stick is generally the easiest to determine, but imperative for a playerâs success in the game. Sticks usually come in four sizes: senior, intermediate, junior and youth. Each size normally reflects a smaller shaft circumference and a softer flex.
Factors in the environment may influence the rate of mutation but are not generally thought to influence the direction of mutation. For example, exposure to harmful chemicals may increase the mutation rate, but will not cause more mutations that make the organism resistant to those chemicals.In this respect, mutations are random  whether a particular mutation happens or not is unrelated to how useful that mutation would be.actors in the environment may influence the rate of mutation but are not generally thought to influence the direction of mutation. For example, exposure to harmful chemicals may increase the mutation rate, but will not cause more mutations that make the organism resistant to those chemicals.
DNA frameshift mutations and their effect on gene expression. There are several classes of DNA mutations. Insertions and deletions are a type of mutation that changes the reading frame of a gene. This article discusses how they are introduced and how they can change affect a protein's formula and function. 1  slide 1 of 5. Opportunities for Mutations DNA is copied by replication prior to cell division, or mitosis, and by transcription as the first step in gene expression. 2  slide 2 of 5. Images. 3  slide 3 of  5.