Chimera
(Science: cell biology) organism composed of two genetically distinct types of cells. Can be formed by the fusion of two early blastula stage embryos or by the reconstitution of the bone marrow in an irradiated recipient or by somatic segregation.
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..
Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..