That point mutation in TKTL1 means that the Neanderthal version of the protein has a lysine where the modern human version has an arginine. After conducting experiments with fetal human neocortex ...

They can also appear spontaneously during the replication of DNA. Mutations generally fall into two types: point mutations and chromosomal aberrations. In point mutations, one base pair is changed.

Around 90% of all EGFR mutations are either an EGFR 19 deletion or an EGFR L858R point mutation, according to a Korean study from 2020. A literature review from 2021 found that as many as 12% of ...

Mutations can be grouped into two main categories ... Each of the stop codons tells the ribosome to terminate protein synthesis at that point. Consequently, the mutant protein is entirely ...

How could a "bad" gene-- the mutation that causes the sometimes lethal sickle cell disease -- also be beneficial? On the other hand, if it didn't provide some survival advantage, why had the ...