Plant Evolution: Measuring the length of the day
Current Biology: 2009 19:R302-R303
How has the ability of plants to measure the length of the day evolved? The finding that the genome of the unicellular alga Chlamydomonas reinhardtii contains a gene homologous to, and functionally conserved with, the Arabidopsis gene CONSTANS might provide part of the answer.
E-link to journal