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Ber [7]
3 years ago
7

According to the ______________ theory, a population may go long periods of genetic stability, interspersed with short periods o

f extreme evolutionary change
Biology
2 answers:
damaskus [11]3 years ago
4 0

C. Punctuated Equilibrium

ikadub [295]3 years ago
3 0
<span>This theory is called punctuated equilibrium. In this theory it is explained that there are very long periods of no change at all to a species, yet there are also bursts of evolutionary change interspersed within the time period. The period of remaining the same throughout time (most of the time) is called stasis, and is present within this theory of punctuated equilibrium.</span>
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Licemer1 [7]

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3 years ago
Which of the following is NOT a function of membrane proteins?a.Transport molecules across the membrane.b.Transmit extracellular
olga2289 [7]

Answer:

The answer is D) Generate the energy required for lipids to diffuse through the membrane.

Explanation:

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4 0
2 years ago
10. In what type of plant tissue is mitosis the most easily observed under<br> a microscope?
Leviafan [203]
A visible nuclei is correct
6 0
2 years ago
Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat
icang [17]

DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

<h3><u>Explanation:</u></h3>

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

Each full turn of a helix is 34A and each base pair is 3.4A apart. The distance between two strands of DNA is 20A.

Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

3 0
3 years ago
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