The opsin made from the OPN1SW gene is more sensitive to light in the blue/violet part of the visible spectrum (short-wavelength light), and cones with this pigment are called short-wavelength-sensitive or S cones. Genetic changes involving the OPN1LW or OPN1MW gene cause red-green color vision defects.
Wood panel fencing â sometimes called stockade fencing â improves privacy and security and is a good choice for setting boundaries for children and pets. Individual components â boards and rails â and prebuilt panels come in sections 4 to 6 feet tall and 6 or 8 feet long. There are two basic types of panels: 1  The boards on a solid panel fence butt against each other. 2  Shadowbox panels, right, use alternating boards on each side of the fence rail to give the fence the same look on both sides, allow air circulation and provide partial views.
1 V-mesh wire (also called no-climb fencing) is one of the safest fencing options out there. 2  This type of fence has a diamond pattern that makes it as effective at keeping animals out as it is in keeping horses in.3  The downside is cost; it is the most expensive wire fence. V-mesh wire (also called no-climb fencing) is one of the safest fencing options out there. 2  This type of fence has a diamond pattern that makes it as effective at keeping animals out as it is in keeping horses in.