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There are several ways how a part of genome can suddently be duplicated with all its genes. That's how every species have different number of chromosomes. I mi
by guard-of-terra 13y ago
There are several ways how a part of genome can suddently be duplicated with all its genes. That's how every species have different number of chromosomes.
I might guess that competitive advantage only apply where weeds are bad: in fields. Before fields there were no advantage to this.
- jrkatz 13y agoRight, but that's not natural selection, that's mutation. Natural selection can pick up on the changes after they've taken place. e.g., There's presumably a gene out there that makes humans twice as intelligent at absolutely zero expense, and although if it were to appear it would be selected for, it it clearly hasn't happened yet. Natural selection can't drive that to occur.
- guard-of-terra 13y agoIs there a gene already in human DNA which would make humans two times smarter if repeated / made more active? That's what happens with weed rice. Btw the answer can be yes. We are no longer constrained by food concerns but our genome does not account for that yet.