The head at the top, the tail is just for getting to the egg
Mutation. this happens when a cell copies its DNA to divide. its more common than you may think, a "typo" occurs every 100, 000 or so nucleotides, thats about 120, 000 "typos" every time a cell divides.
Answer:
Intrusive rocks are coarse-grained in texture and crystallise slowly from magma deep in the earth's crust. Extrusive rocks are fine-grained in texture and crystallise quickly from lava on or near the earth's surface. The mineralogy determines the type of rock.
Experts are rarely able to distinguish between two people handwriting. This is FALSE. Reason here is that a person can identify for two different people.
2. There are often no specific tests that can be used to definitely prove that something has been forged. This is TRUE. there is no specific prove that something has forged.
3. Documents examiners have have an easy time in obtaining exemplars because most people volunteer them. This is FALSE because there is no easy way to obtain exemplars of documents.
4. All typewriters and related devices will have variations in the type over time as the typewriter experiences wear and tear to its parts. This is TRUE because typewriters and other devices will not have variations of tear and wear to its parts.
