DNA exists as a double-stranded structure, with both strands coiled together to form the characteristic double-helix. Each single strand of DNA is a chain of four types of nucleotides. Nucleotides in DNA contain a deoxyribose sugar, a phosphate, and a nucleobase. The four types of nucleotide correspond to the four nucleobases adenine, cytosine, guanine, and thymine, commonly abbreviated as A, C, G and T. Adenine and guanine are purine bases, while cytosine and thymine are pyrimidines. These nucleotides form phosphodiester bonds, creating the phosphate-deoxyribose backbone of the DNA double helix with the nucleobases pointing inward (i. e. , toward the opposing strand). Nucleobases are matched between strands through hydrogen bonds to form base pairs. Adenine pairs with thymine (two hydrogen bonds), and guanine pairs with cytosine (three hydrogen bonds).
Color is an expression of life, and the living. Imagine a world without color? The basic of every color is black and white. We all know theta it is from the basic white light that gives us the bright and colorful rainbow with seven variety colors. It's hard nowadays to find ways to get your kids, especially boys to sit down and work on something. Harder still to find something you can do with them and really take part in and contribute to. This is a fantastic thing you can do today to bond with your son and I really recommend it. Oh and it doesn't hurt that its really cheap to do! Most homes will have coloring pencils or crayons. In my house we also have glitter pens, foam pens and most importantly paints for the kids to select between. Using paints will require a little bit more setup time as you may need to clear an area and lay newspapers down over the table to protect it. The preschool coloring pages are a very important source of learning before children go to school, the main advantage of it being the fact that is given at home and parents and grandparents play a very important role in it.The funny way of learning helps children memorize better the useful information and to apply what he learns in an easy way.They help children improving the motor skills,eye-hand coordination.Your preschooler will have fun while coloring the pages and will gain the love of learning by using crayons or coloured watercolors.