Aren’t we also close relatives to pigs?
In short, even beings with 99.9% genes in common could be quite different, as each gene can express itself very differently. Is that correct? Is there a way to evaluated the common ground of the genome between two species when accounting for the potentially different gene expressions?
Sure, we are closely related to pigs. Also cos of the fact that we are both mammals means that we share some genes which is at least 98 per cent. This link would help.
Evolution has answered all the questions that might pop up. Since it's been agreed that we all came from a common ancestor, why should it then be a surprise that we share similar genes with other animals?
We may have a common basis, but 9x% is a high level, isn't it?
That's definitely understandable with apes but sea urchins? Unless there is a connecting links
We need to say the paths from one to the other I guess. But this is way beyond my zone of comfort ;)
It is called 'adaptive radiation'. While humans and apes share the same route of adaptive radiation, sea urchins have a completely different route but since we all shared a common ancestor, I am not surprised their genes is 70% similar to that of humans. If the genes of all living organisms are sequenced, I am sure we will discover a similar trend as far as the theory of organic evolution stays true.
Yes, that's correct.
Thanks for these useful details! :)