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<span>The first level of compaction of dna consists of:
</span>DNA winding around histones to form small nucleosomes
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Answer:
Reproductive isolation
Explanation:
The definition of speciation is "the formation of new and distinct species in the course of evolution." Because a new a distinct species is formed, even if not physically isolated, they can not interbreed because two species can not reproduce with each other. Therefore, the answer is Reproductive isolation, because speciation will still occur even without physical isolation.
Answer:
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Periods of light-time
- Temperature
- Substrate/Soil type
Explanation:
Controlled variable: Variables that are controlled and have no influence on the results of the experiment. These variables do not affect the change in the dependent variable values.
These variables must be the same for all the subjects or groups (control and experimental). In the case of plants, controlled variables are probably those needed by the plants to correct development.
All plants should be exposed to the same period of light-time and the same temperature. Also, the substrate or soil where the plants are growing should be the same.
D - the endoplasmic reticulum (ER)
