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3 years ago

Why would an organism abruptly show up in the fossil record

Biology

2 answers:

stellarik [79]3 years ago

8 0

The correct answer is option C, An organism experienced punctuated equilibrium and rapidly evolved into another organism entirely

The biologist and geologist have not been able to identify the cause of sudden appearance and disappearance of an organism in the fossil record. They then coined the term punctuated equilibrium which supports the concept of lack of information regarding the changing fossil records. The punctuated equilibrium believes that evolution happened suddenly in a very short duration. There are lot of missing links regarding the transitional forms of any evolving organisms which now is used to support sudden appearance of an organism in the fossil record

Sophie [7]3 years ago

6 0

C. An organism experienced punctuated equilibrium and rapidly evolved into another organism entirely.

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In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific comm

julia-pushkina [17]

Answer:

Option (1), (2) and (3).

Explanation:

DNA is the genetic material of all the living organisms present on earth. The DNA contains the nitrogenous bases, pentose sugar and the phosphate group. DNA strands runs in the opposite direction and shows polarity.

Watson and Crick explain the structure of DNA based on the X ray diffraction produced by Rosalind. According to the structure, chromosomes are present in the nucleus and contains the DNA and wrapped around the proteins. The genes is considered as the functional segment of DNA.

Thus, the correct answer is option (1), (2) and (3).

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3 years ago

What happens to an ecosystem if its river is destroyed

spin [16.1K]

Answer:

the earth will eventually crack amd form a new river and the clouds will precipitate and cause water for the stream of the river

3 0

2 years ago

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In which phase of cell cycle does synthesis of dna take place?

BigorU [14]

It happens during the s phase

4 0

3 years ago

Why do humans show variation?

Mars2501 [29]

Answer:

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Explanation:

Causes of Variation:

Causes of differences between individuals include independent assortment, the exchange of genes (crossing over and recombination) during reproduction (through meiosis) and various mutational events. There are at least three reasons why genetic variation exists between populations.

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8 0

2 years ago

What would be most likely to happen if some of the proteins in one of the photosystem were to change shape due to a rise in cell

Sever21 [200]

Answer;

C. A decrease in the formation of ATP

Explanation;

-During the first stage of photosynthesis NADPH is created. It involves two set of molecules, that is photosystem I and photosystem II, which absorb sunlight, then convert it to chemical energy, and transfer it to electrons.

-Outside factors may cause the plant's pH level to drop during photosynthesis. When this happens, the shape of the proteins may be altered within the two photosystems and cause a decrease in the formation of NADPH, thus adversely affecting efficient photosynthesis, and cause a decrease in the formation of ATP.

7 0

2 years ago

Read 2 more answers