A gardener is trying to win a competition for the largest pumpkin. Every year, she saves the seeds from the largest pumpkin in her garden. The next year, she plants only those seeds in a large plot. She finds that her pumpkins are becoming larger over the years. Is this an example of natural selection?

No, this is artificial selection.This is because, the selective pressure was not a natural factor, but the farmer  who purposefully selected the best seed based on sizes. Therefore, he did not allow the natural phenomenon to it its cause, but rather chose the most fitted/ viable/largest seeds to germinate.

Explanation:

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

hi there!

answer: b. nucleolus

explanation: nucleolus is a structure in the nucleus are ribosomes are made.

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