Why Are Collisions Between Galaxies More Likely Than Collisions Between

question 130

Multiple Choice

Why are collisions between galaxies more likely than collisions between stars within a galaxy?

• A)Relative to their sizes, galaxies are closer together than stars.
• B)Galaxies are much larger than stars.
• C)Galaxies have higher redshifts than stars.
• D)Galaxies travel through space much faster than stars.

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Definitions:

Secondary Spermatocyte

A cell that arises from the division of a primary spermatocyte during spermatogenesis and goes on to divide into spermatids.

Meiosis II

The second division in meiosis, a process of cell division that reduces the chromosome number by half, resulting in the production of four genetically distinct gametes.

Meiosis I

The first division in the two-stage process of meiosis that reduces the chromosome number by half, resulting in four haploid cells.

Haploid Gamete

A sex cell (sperm or egg) that contains a single set of chromosomes, ensuring that upon fertilization, the resulting offspring will have the correct number of chromosomes.