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o-na [289]
3 years ago
6

How does natural selection lead to evolution?

Biology
1 answer:
Novay_Z [31]3 years ago
8 0
C. Helpful variations accumulate among surviving members of a species
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What was known before Franklin and Wilkins conducted their studies of DNA? Check all that apply. DNA is found in the nucleus of
kvasek [131]

Answer:

The correct answer will be-

   1. DNA is found in the nucleus of a cell

    2. Organisms store and transmit genetic information

    3. Cells contain protein molecules.

Explanation:

The study of DNA started much before the discoveries of Rosalind Franklin and Maurice Wilkins.

Nucleus of cell was discovered by Robert Brown in 1831 but the material present inside the nucleus called "nuclein" (DNA) came from the studies of Johann Friedrich Miescher in 1869.

Proteins as a constituent of cell were discovered by the experimental analysis of Gerhardus Johannes Mulder in 1837.

DNA as a genetic material came from the experimental studies of Frederick Griffith in 1928, Oswald Avery, Maclyn McCarty, and Colin MacLeod in 1944, and Hershey and Chase in 1952.

Franklin and Maurice Wilkins are known for their work on the the structure of DNA as they were able to produce high-resolution X-ray photographs of DNA fibres called Photo 51 in 1952 using X-ray diffraction technique. By 1953 Franklin concluded concluded that DNA shows helical structure with phosphates on outer side.

Thus, 1. DNA is found in the nucleus of a cell

         2. Organisms store and transmit genetic information

         3. Cells contain protein molecules.

             are the correct options.

8 0
3 years ago
Read 2 more answers
Crickets, grasshopper, cockroaches, and dragonflies are examples of organisms that go through incomplete metamorphosis. A physic
torisob [31]

Answer:

A

Explanation:

The answer is Wingless I think.

6 0
2 years ago
___________ refers to traits that are affected by many genes, and ___________ refers to traits that are influenced by many facto
diamong [38]
<span>_polytechnic__________ refers to traits that are affected by many genes, and __mulitifractorial_________ refers to traits that are influenced by many factors.</span>
3 0
3 years ago
PLEASE HELP ME WILL MARK BRAINLIEST!!!!!!!What is the name of one of the lower chambers of the heart that receives blood from th
Morgarella [4.7K]

Answer:

left ventricle

Explanation:

left ventricle pumps oxygen rich blood to the body (away from the heart, so through the arteries)

7 0
3 years ago
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Which layers most likely have a pressure, represented in units of GPa, ranging from 75 GPa to 110 GPa? Check all that apply. Out
lara [203]
<h3><u>Answer;</u></h3>

Lithosphere

<h3><u>Explanation</u>;</h3>
  • Lithosphere is the solid outer part of the earth which includes the brittle upper portion of the crust and the mantle. It is bounded by the asthenosphere below and the atmosphere above.
  • <em><u>The pressure in the lithosphere is about 109 gigapascals or GPa.  </u></em>
  • <em><u>Asthenosphere has a pressure of about 18 GPa</u></em>
  • <em><u>The mantle is a layer between the outer core and the crust, it has a pressure of about 149 GPa.</u></em>
5 0
2 years ago
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