Every year, painted lady butterflies make huge migrations from Africa to Europe and back again. They also do this in North America, from Mexico to northern United States and Canada and back again. The migrations can be up to 15000 km long.ggs of the Painted Lady appear to be pale green in color. Caterpillars are grayish brown and darker at the ends. They have a yellow stripe running down the back of their body, and spikes along the back and sides of their body. Pupae can be a variety of colors including a metallic green, brown, or bluish-white.
The Helical Structure of DNA shows a single strand of DNA. However, as stated earlier, DNA exists as a double-helix, meaning two strands of DNA bind together. Figure %: Double-helical DNA As seen above, one strand is oriented in the 5' to 3' direction while the complementary strand runs in the 3' to 5' direction.
1. The DNA double helix is held together by two types of bonds, covalent andhydrogen. Covalent bonds occur within each linear strand and strongly bond thebases, sugars, and phosphate groups (both within each component and betweencomponents).It is the 3Â´ -OH group thatis required to create the next phosphodiester bond.) The RNA is subsequentlyremoved and replaced with DNA so that no gaps exist in the final product. 4. Helicases are enzymes that disrupt the hydrogen bonds that hold the two DNAstrands together in a double helix.