Genetics is the study of genes, heredity, and genetic variation in living organisms. It is generally considered a field of biology, but it intersects frequently with many of the life sciences and is strongly linked with the study of information systems. The father of genetics is Gregor Mendel, a late 19th-century scientist and Augustinian friar. Mendel studied 'trait inheritance', patterns in the way traits were handed down from parents to offspring. He observed that organisms (pea plants) inherit traits by way of discrete units of inheritance.
Razors come in two varieties, dual bevel or single bevel. They are identified by whether both sides are angled, which creates a side-view like an isosceles triangle, or just single-angled. The single-angled is straight one one side and angled on the other. When talking about sharpening blades to a particular angle, the sharpening needs to occur equally to both sides of the dual-angle blade. For instance, the ideal shave is achieved with a 15 to 20 degree bevel angle.
This was often a desperate move on the part of the losing side. At that point, when an inexperienced swordsman was surrounded by enemies, the only way to escape was the flexibility and speed of curved swords. First of all, curved swords are easier to draw from the sheath than a straight blade. They should also be your go-to choice if you have to hack down multiple enemies quickly. Curved swords have more cutting area than straight ones, as they have a better angle of attack.