3 years ago

Where are some of Earth's youngest rocks found?

Biology

1 answer:

stealth61 [152]3 years ago

6 0

The correct answer for this question would be C) At seafloor spreading centers or the third option.

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This picture is illustrating I. the creation of new life II. asexual reproduction III. sexual reproduction IV. the union of egg

Shkiper50 [21]

Answer: c

Explanation:

8 0

3 years ago

Beginning with a cell that just fertilized ( 1 cell ) how many times must it divide to become a 64 cell blastomere ?

natka813 [3]

A cell that just fertilized has to divide 6 times to form a 64 cell blastomere.

<u>Explanation:</u>

Human reproduction begins with the fusion of male gamete sperm and female gamete ovum. The fusion of sperm and ovum forms the zygote that is diploid. The zygote then undergoes mitotic division to develop into embryo.

The zygote first divides into two and the two individual cells divide again to form four individual cells and so on. Thus the number of cells after each division can be represented by the equation $2^n$ where n is the number of divisions. in the question it is given that the blastomere has 64 cells.