Answer:
The correct answers: B, C and D.
Explanation:
- X-ray diffraction studies of the DNA reveal the following:
- The DNA is comprised of two strands which are coiled around each other in the shape of a helix.
- The backbone of the DNA is made up of phosphate and deoxyribose groups, alternately, which are exposed towards the outside of the helix.
- The nitrogenous bases which form the hydrogen bonds that link the two helices are directed towards the centre of the helix.
<span>The memory test that would most effectively reveal that mr. marchman, at age 65, still remembers many of his high school classmates, is RECOGNITION test. </span>Recognition memory <span>is the ability to recognize previously encountered events, objects, or people.</span>
<span>Genetic material is passed down from parents to offspring by DNA. The DNA copies itself and the number of chromosomes is split in the half from 46 to 23 chromosomes.</span>
Answer:
It is well known that DNA is more important than RNA for Evolution. As the DNA contains the genetic and heridetary which is responsible for Continuity of the generation after generation. So, that's why. The DNA is more important than RNA for Evolution.
Explanation:
Answer:
Pictures from Hubble help scientists learn more about the whole universe.
Explanation:
Hubble has helped scientists learn about our solar system. The telescope observes comets and planets. Hubble even discovered moons around Pluto that had not been seen before. The telescope has helped scientists understand how planets and galaxies form. Galaxies contain billions of stars. A picture called "Hubble Ultra Deep Field" shows some of the farthest galaxies ever seen. Because of Hubble pictures, scientists think the universe is almost 14 billion years old.