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Nutka1998 [239]
2 years ago
8

what evidence and logical reasoning support the conclusion that anaerobic organisms evolved first, followed much later by aerobi

c organisms?
Biology
1 answer:
NISA [10]2 years ago
8 0

Answer: The atmosphere of the early Earth consists mainly of carbon dioxide and nitrogen, with little or no oxygen. In this case, the ancient prokaryotes are anaerobic, which evolved in the absence of oxygen. Eventually, when photosynthetic bacteria became common, they released oxygen and changed the Earth's atmosphere.

Explanation: i took a test with this on it, i hope my answer helps

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Answer:

a. Let us consider that L is responsible for late and l is responsible for early. From the mentioned data, it can be concluded that allele L or late is dominant over early. By crossing plants 1 and 4 we get the expected ratio of 3: 1, which shows that it follows Mendel's law of dominant.  

b. The genotype of all the four plants are:  

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c. If the plant 1 is self-fertilized then the expected progeny will be 3 (late): 1 (early).  

In case if the 2nd plant is self-fertilized, the expected progeny will be only early.  

In case if the 3rd plant is self-fertilized, the expected progeny will be only late.  

In case if the 4th plant is self-fertilized, the expected progeny will be 3 (late): 1 (early).  

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Question 6 of 10
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B. capsid.

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Within the capillaries of the lungs, gases are exchanged by diffusion; oxygen diffuses from the _____ to the ____ and carbon dio
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I guess that is:
Within the capillaries of the lungs, gases are exchanged by diffusion; O2 diffuses from the alveolus to the bloodstream and CO2 diffuses from the bloodstream to the alveolus.
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A

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