Evolutionary analyses and natural selection of betaine-homocysteine S-methyltransferase (BHMT) and BHMT2 genesGanu, R.S., Y. Ishida, M. Koutmos, S.O. Kolokotronis, A.L. Roca, T.A. Garrow, and L.B. SchookPLoS ONE, 10(7), doi: 10.1371/journal.pone.0134084 Evolutionary analyses and natural selection of betaine-homocysteine S-methyltransferase (BHMT) and BHMT2 genes.pdf