diversity and evolution of organisms

Introduction - Every organism whether plant or animal is unique in itself. There is a wide diversity in the flora (plants) and fauna (animals) in the world. The diversity we see today is the result of 3.5 billion years of organic evolution. During t..

(known number of species) and their abundance (number of individuals). The incredible array of animals is the result of hundreds of million years of organic evolution..

Organic Evolution - Chemical evolution resulted in the formation of life on earth about 3.8 billion years ago. The primitive cells that resulted from this process gradually gave rise to primitive forms of organisms such as bacteria, algae, fungi and protozoan..

Evolution may be defined as a gradual development of more complex species from pre-existing simpler forms. It is an extremely slow process and has occurred over millions of years. Evolution that has occurred is clear because of the evidences of fossils, etc. However, the m..

Chemical evolution resulted in the formation of life on earth about 3.8 billion years ago. The primitive cells that resulted from this process gradually gave rise to primitive forms of organisms such as bacteria, algae, fungi and protozoan. These organisms in tur..

..

Taxonomy is a regular branch of science that is involved with the purpose of arranging or grouping organisms..

Evolution - It is clear that there is an inherent tendency to variation in sexual reproduction. An error in DNA copying during sexual reproduction also causes changes as we shall see. The long-term consequences of the accumulation of variations in species, is the basis for evolutionh..

Effect of natural selection on the phenotype of an organism Lethal alleles in a homozygous individual carried in a heterozygote New mutations in a gene pool Variation within a species - survival under changed environmental conditions Conditions for Hardy-Weinberg equilibrium in ..

Effect of natural selection on the phenotype of an organism Lethal alleles in a homozygous individual carried in a heterozygote New mutations in a gene pool Variation within a species - survival under changed environmental conditions Conditions for Hardy-Weinberg equilibrium in ..