Answer:
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).
Explanation:
<span>it was molecular structure of DNA this was appeared 1n April 1953 Watson and Crick presented the structure of DNA- Helix.it carried the genetic information. the DNA Molecule shaped in twisted ladder.franklin produced an X- ray photograph.
DNA structure is made of molecules called nucleotide. Watson and crick also work on 3-D structure of DNA. this mark the history in molecular biology to understanding the genes control and genetic information.they also work on cell.they use stick and ball to understand to test their idea.</span>
B. CONSISTENCY.
Soil consistency is most dependent on soil moisture.
Soil consistency are identifies as Moist Soil, Wet Soil, and Dry Soil.
Moist soil are loose when dry or wet, friable (using gentle pressure), and firm (using moderate pressure)
Wet soil are plastic and sticky.
Dry soil are either soft or hard.
