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Blababa [14]
3 years ago
8

Tortoises with long necks were found to be abundant in regions that had vegetation on a higher level. A few years later, drought

hit the region and the vegetation dried up. Over time, grasses were observed in the region. Shortly thereafter, an increase in short-necked tortoises was observed in the region. What does this change in the species of tortoises suggest?
A. Changes in the environment give rise to evolution of species.
B. Tortoises all around the world are now short necked.
C. Tortoises found only in this region are short necked.
D. Only changes in food availability affect the evolution of species.
Biology
2 answers:
AfilCa [17]3 years ago
4 0
The correct option is A.
Living organisms depend on their environment to survive, when there are changes in the environment which are not favorable to the living organisms, it will eventually leads to the wiping out of the living organisms. As time goes on and the environment recover, the living organisms that will be found in the new environment are those who will be able to survive in it.
nalin [4]3 years ago
4 0

Option A is correct on Plato

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Arguably, the way prokaryotic operons are structured has evolutionary advantages. Based on our discussions in class, briefly des
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Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. To synthesize a protein, the processes of transcription and translation occur almost simultaneously. When the resulting protein is no longer needed, transcription stops. As a result, the primary method to control what type of protein and how much of each protein is expressed in a prokaryotic cell is the regulation of DNA transcription. All of the subsequent steps occur automatically. When more protein is required, more transcription occurs. Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level. whereas in eukaryotes, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein. The processes of transcription and translation are physically separated by the nuclear membrane; transcription occurs only within the nucleus, and translation occurs only outside the nucleus in the cytoplasm.

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gravity

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6 0
3 years ago
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