Images of A-DNA
In the DNA double helix, the strands are connected by hydrogen bonds between the bases that pair in a specific way (A-T and C-G)[Credit: Anatomy & Physiology, Connexions]
There are five levels of chromosome organization. From top to bottom: The top panel shows a DNA double helix. The second panel shows the double helix wrapped around proteins called histones. The middle panel shows the entire DNA molecule wrapping around many histones, creating the appearance of beads on a string. The fourth panel shows that the chromatin fiber further condenses into the chromosome shown in the bottom panel.
a) A diagram of DNA shown as a double helix (a twisted ladder). The outside of the ladder is a blue ribbon labeled
Illustration of the structural components and building blocks of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Hand touching DNA sequence molecules structure mesh. Wireframe DNA code editable template. Genetic engineering. Medical research. Science and Technology concept. Pro Vector
DNA is the universal genetic code that stores complex information and gets copied from one generation to the next Dna Model Project, Biology Projects, Life Science, Elephant, Higher Education, Books Online, Family Finder, Dna Replication, Blood Cells
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. #what is dna #what are dna & replication #dna #dna function #dna definition #What is DNA made of Chemistry Lessons, Biology Lessons, Biology Notes, Science Notes, Teaching Biology, Science Biology, Life Science, Nurse Study Notes, Nursing Study