Chara –>
characean algae
(Science: organism) class of filamentous green algae exemplified by the genus chara, in which the mitotic spindle is not surrounded by a nuclear envelope. Probably the closest relatives, among the algae, to higher plants. The giant internodal cells (up to 5cm long) exhibit dramatic cyclosis and have been much used for studies on ion transport and cytoplasmic streaming.
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like organisms. Because of the expanding diversity of animal life forms, taxonomists eventually came up with a classification scheme to group them into various phyla. Know more about the early animals that were likely the first ones to roam the ancient seas through this tutorial...
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural selection have led to studies that actively manipulate the phenotype of offspring by selective breeding in animals and plants. ..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosomes and the genetic traits inherited via these two...
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolution in this tutorial that elaborates on the different Homo species in the early geologic time. ..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides details of the different parts and functions of the respiratory system...
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development from zygote to embryo and ultimately to a human baby. ..