DNA vs RNA

Comparison DNA RNA Full Name Deoxyribonucleic Acid Ribonucleic Acid Function DNA replicates and stores genetic information. It is a blueprint for all genetic information contained within an organism. RNA converts…

HUMAN GENOME PROJECT

Introduction • Until the early 1970’s, DNA was the most difficult cellular molecule for biochemists to analyze. DNA is now the easiest molecule to analyze – we can now isolate…

Cell Theory

In 1838, Matthias Schleiden, a German botanist, examined a large number of plants and observed that all plants are composed of different kinds of cells which form the tissues of…

Brown or leaf rust of wheat

Puccinia triticina (P. recondita) DISEASE: Leaf or Brown rust PATHOGEN: Puccinia triticina (Syn. Puccinia recondita f. sp. tritici) HOSTS: Wheat, barley and common Barberry (Berberis, Mahoberberis and Mahonia spp.) Symptoms…

Late Blight of Potato

The disease was recorded simultaneously in Europe and North America in 1830. It became very well established in Europe by 1842 and was one of the important causes of the…

Plant Cell Wall

A novelty song of more than 50 years ago listed food items the writer said he disliked. Each verse ended with the line, “I like bananas because they have no…