Berita Biologi Volume 10, Nomor 6, Desember 2011 merupakan jurnal ilmiah yang diterbitkan oleh Pusat Penelitian Biologi-LIPI dan memuat hasil penelitian serta kajian dalam berbagai bidang ilmu hayati. Edisi ini membahas beragam topik, antara lain efektivitas bahan pelindung alami terhadap infektivitas virus serangga, pencemaran perairan Teluk Youtefa, ekspresi gen pembungaan pada jarak pagar, p…
In a population in which the sexual nature of the individuals is not subject to change, the sex-ratio of a given brood as determinable in practice may be different at different times if there is a differential rate of maturation for the two sexes, or a differential death rate. Excluding from present consideration the periods in the life of the population at which these differentials may operate…