Explanation:
Low power objective shows more field of view but does not give appreciable details about the view.
- In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern.
- The nucleus stands out appreciably and it is tiny.
- The cytoplasm is also visible.
- Root cells do not have chloroplast since they do not take part in photosynthesis.
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Answer:
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Answer:
When we say that a trait has been "selected for", this means that. individuals with that trait reproduce more than individuals without that trait.Explanation:
Answer:
b, a, d, c, e
Explanation:
The lac operon is called lactose operon is a cluster of genes with a promoter. The bacteria uses lactose as the source of energy by the proteins coded by genes. This is present in prokaryotes.
The regulatory gene codes for repressor protein. The repressor binds to lactose and prevent its binding to operator. In the absence of lactose repressor gets activated and binds with operator. Thus, RNA polymerase is prevented from binding the promotor. The transcription of genes inhibited. Thus correct order is b, a, d, c, e.
