When usingthe standard proteins it is typically assumed that the vv values of thestandard and actually measured protein are identical. With thisassumption, the ratio of the molecular masses of the two proteins isidentical to the ratio of their I(0)s normalized against the concen-trations.
The gametes (an egg and a sperm) fuse in the process of syngamy to form a 2 n zygote. The zygote divides mitotically to form a multicellular embryo ( embryogenesis), which is protected by either gametophytic tissues (such as remnants of archegonia in the nonseed land plants) or sporophytic tissues (the seed in the seed plants). An embryo,...
The human nervous system starts to form very early in the embryoâs development. At the end of the gastrulation phase, an elongated structure, the notochord, is laid down. The embryo thereby changes from a circular organization to an axial oneâa critical step in the development of its nervous system.ext, the zygote divides into 2 cells, then 4, then 8, then 16, and so on, until a spherical mass of cells has formed. This first stage of development is often called segmentation. Gradually, a cavity develops at the centre of this ball as it exits the fallopian tube to implant itself in the wall of the uterus.