Experiments have shown that any nuclei placed in the polar cytopl...

Question

Experiments have shown that any nuclei placed in the polar cytoplasm at the posterior pole of the Drosophila egg will differentiate into germ cells. If polar cytoplasm is transplanted into the anterior end of the egg just after fertilization, what will happen to nuclei that migrate into this cytoplasm at the anterior pole?

Accepted Answer

Hi, everybody. Let's take a look at this practice problem together. Which of the following cells are the precursors to the germ cells. In the adult Drosophila, we should know what germ cells are. So they are cells that will form gametes and gametes are the reproductive cells in the adult Drosophila. So what is the precursor to the germ cells? Let's take a look at the answer options. We've got a somatic cells. Now, these are any cells other than the germ cells. So for this reason, option A is not the correct answer. Then we've got options. See neural stem cells. Now these are stem cells of the nervous system and therefore they do not give rise to the germ cells. So C is not the correct answer. This means that d all of the above is not the correct answer. And the correct answer is option B, pole sales recall that pole cells in the embryo are the precursors that become the germ cells in adult Drosophila. So B is the correct answer. Alright, everyone, I hope you found this helpful and I'll see you soon for the next practice problem.

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