Also known as B chromosomes, these chromosomes are excess chromosomes resulting from unsuccessful meiotic divisions where resultant cells have extra chromosomes. A common reason for this happening is Non-Disjunction, where the split of chromosomes into daughter haploid cells is uneven in number.
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..