Question

the changes in the somatic cells are not responsible for speciation.why?
say me proper answer plz​

Answer 1

$\huge\underline\mathfrak\red{Answer ❤️}$

isolating mechanisms, genetic drift, founder effect, and migration. sequence events that can lead to reproductive isolation of two populations ❤️

Answer 2

Changes in the somatic cells are not responsible for speciation:

• True. Mutations are random and the genome is huge, so a mutation would probably be limited to only a couple cells if it repeated at all.

• Say I get a mutation in a brain cellthat boosts its signal conduction speed.

• That would boost my reflexes and provide a huge advantage... but unless that mutation happened in all of my nerve cells, it probably wouldn't matter, since a single fast neuron wouldn't be all that great.

• The other reason is that somatic cells can't pass their genetic material on to the next generation - there would be no way for that mutated neuron to migrate down south and turn into a sperm cell.

• The only cells capable of doing that are the germ cells already in the testes and ovaries.

• That's why doctors are much more careful about x-raying that region compared to the rest of the body - a single mutation in a couple cells in your arm from an x-ray probably wouldn't cause any problems...

• But if that mutation were in a single sperm cell that went on to fertilize an egg, the child would then have that mutation in every cell in its body.

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