DNA does not usually exist as a single strand, but instead as a pair of strands that are held tightly together. [9] [11] These two long strands coil around each other, in the shape of a double helix . Ver mais Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and Ver mais Base modifications and DNA packaging The expression of genes is influenced by how the DNA is packaged in chromosomes, in a … Ver mais DNA usually occurs as linear chromosomes in eukaryotes, and circular chromosomes in prokaryotes. The set of chromosomes in a cell makes up its genome; the human genome has approximately 3 billion base pairs of DNA arranged into 46 … Ver mais A DNA helix usually does not interact with other segments of DNA, and in human cells, the different chromosomes even occupy separate areas in the nucleus called " Ver mais DNA is a long polymer made from repeating units called nucleotides. The structure of DNA is dynamic along its length, being capable of coiling into tight loops and other shapes. In all … Ver mais All the functions of DNA depend on interactions with proteins. These protein interactions can be non-specific, or the protein can bind specifically to a single DNA sequence. … Ver mais DNA contains the genetic information that allows all forms of life to function, grow and reproduce. However, it is unclear how long in the 4-billion-year history of life DNA has performed this function, as it has been proposed that the earliest forms of life may have used RNA as … Ver mais Web21 de mai. de 2024 · In the DNA double helix, the two strands of DNA are held together by hydrogen bonds between the base pairs adenine-thymine (A-T) and cytosine-guanine (C-G). Expert answered Janet17 Points 41800 Log in for more information. Question Asked by angelina01. Asked 5/21/2024 1:23:16 PM.
Anatomy and Physiology 12 – DNA Replication and Protein …
WebThis problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: The two strands of DNA are held … only personality tests
(a)How are the two strands of DNA helix held together
WebThere are chemical cross-links between the two strands in DNA, formed by pairs of bases held together by hydrogen bonds. They always pair up in a particular way, called … Web30 de jan. de 2024 · In the DNA double helix, how are the two strands of DNA held together? A. Hydrogen bonds between the base pairs hold the two strands of DNA … WebCorrect option is C) The nitrogenous bases present in the DNA are purines and pyrimidines. Purines are double ring while pyrimidines are single ring structure. Adenine and guanine are purines while thymine, uracil, and cytosine are pyrimidines. A purine is attached to pyrimidine by hydrogen bond. Adenine is attached to thymine by two hydrogen ... only person