You will also like...
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..