Darwinism

Darwinism

Darwinism comprises the natural selection concept as advanced by
Charles Robert Darwin in 1859. His theory provided the correct idea to
explain all processes and intricate mechanisms of evolution. The theory of
natural selection is considered on par with Newton’s law of gravitation and
Einstein’s theory of relativity. The monumental work of Darwin was titled as
“The Origin of species” (the original full title of the book was ‘On the Origin of species by means of Natural Selection, or the Preservation of favoured
Races in the struggle for life’).

The book of Darwin convincingly demonstrates the fact of
evolution. Further, it elaborates on the theory of natural selection as a
convincing mechanism for providing evolutionary transformations.
Charles Darwin was born in Shrewsbury, England on February 12,
1809. While studying in college at England through his friendship with
Professor J.S. Henslow, Darwin became familiar with Botany. Later he
accepted the job of a naturalist aboard the ship H.M.S Beagle. The ship was
to spend five years, in exploration around South America (1829 – 34).
During the period of five years, Darwin visited pacific islands and
many parts of the world. He returned to England in 1836. Later he worked
for a further period of 20 years to develop his theory of natural selection.
While Darwin prepared his work for publication, a similar idea to explain
evolution was proposed by another naturalist, Alfred Russel Wallace
(1823-1913) from Malay archipelago. Charles Darwin gracefully accepted
for the publication of his theory as a joint paper with Wallace. Thus the theory
of natural selection is actually titled as ‘Darwin-Wallace theory of
evolution’.

Related Topics in Zoology:

Bio Zoology All Important Topics

  1. Livestock and Management
  2. Important cattle breeds and their characteristics
  3. Milch breeds (or) Dairy breeds
  4. Dual purpose breeds & Draught breeds
  5. Exotic breeds of cattle
  6. Common diseases and control in Cattle – Contagious diseases
  7. Non-contagious diseases – Cattle
  8. Techniques adopted in cattle breeding
  9. Poultry Breeds
  10. Farming methods
  11. Poultry byproducts
  12. Fish Pond
  13. Edible Fishes Of Tamilnadu
  14. Medical Lab Techniques – Stethoscope
  15. Sphygmomanometer
  16. Haemocytometer
  17. Urine Sugar analysis
  18. ECG Electrocardiogram
  19. Computed Tomography CT
  20. Endoscopy (Laproscopy) techniques , Artificial Pacemaker
  21. Autoanalyser

Unit 7. THEORIES OF EVOLUTION Topic List Zoology

  1. Theories Of Evolution Introduction
  2. Lamarck Laws
  3. Neo Lamarckism
  4. Darwinism
  5. Theory of Natural Selection
  6. Objections to Darwinism
  7. Modern concept of Natural Selection

Comments

Post a Comment

Popular posts from this blog

Root Canal Treatment

Image
Root Canal Treatment Root Canal Treatment is a modern dental procedure to save a tooth in which the pulp (the living tissue within a tooth) has died or become untreatably diseased, usually as a result of extensive dental caries. Steps involved in Root Canal Treatment (1) A hole is drilled into the crown to remove all material from the pulp chamber. The root canals are then cleaned with fine-tipped instruments. The procedure is usually monitored by X-rays. (2) The cavity is washed out, and antibiotic paste and a temporary filling are packed into it. Some days later, the filling is removed and the canals are checked for sterlity. (3) When no infection can be detected, the cavity is filled with a sealing paste and/or tapering solid “point” made of gutta – percha resin mixed with zinc and bismuth oxides. The mouth of cavity is then sealed with cement. Related Topics in Zoology: Bio Zoology All Important Topics Human Physiology Introduction Nutrition Carbohydrates Poly hydroxyaldehydes...
Read more

Eye Infections and Eye Care

Image
Eye Infections and Eye Care Eye Infections 1. Stye A stye is an acute infection of the glands located at the eyelid margin. There is swelling, pain, itching and redness in a small area at the lid margin. Treatment consists of using frequent warm compresses on the eye. (Eye Infections) 2. Conjunctivitis: Infection in the conjuctiva is called conjunctivitis. Due to the infection the invisible blood vessels within the conjunctiva become engorged. Inflammation of the conjuctiva causes redness, discomfort and a discharge from the affected eye. The most common causes for conjunctivitis are infections (in children) and allergy (in adults). (Eye Infections) 2a. Infective conjunctivitis : Most conjunctival infection are caused by bacteria (e.g staphylococci) and are spread by hand-to-eye contact or by viruses associated with a cold, sore throat, or illness such as measles, viral conjunctivitis sometimes occurs in epidemics, spreading rapidly through schools and other groups. (Eye Infections) 2b...
Read more

Botanical description of Hibiscus rosa sinensis

Image
Botanical description of Hibiscus rosa sinensis Hibiscus rosa sinensis Botanical description of Hibiscus rosa sinensis Hibiscus rosa sinensis General Characters Habit Perennial shrub. Root Tap root system. Stem Aerial, erect, cylindrical, woody and branched. Leaf Simple, Alternate, petiolate, stipulate, serrate, glabrous, apex acuminate with multicostate reticulate venation. Inflorescence Solitary cyme and axillary. Flower Pedicel jointed, bracteate, bracteolate, bisexual, large, showy, pentamerous, dichlamydeous, actinomorphic, complete and hypogynous and mucilage is present in floral parts. Epicalyx 5 to 8 bracteoles outer to the calyx. They are green and free. Calyx Sepals 5, green, gamosepalous showing valvate aestivation and odd sepal is posterior in position. Corolla Petals 5, variously coloured, polypetalous but fused at the base and showing twisted aestivation. Androecium Numerous stamens, monadelphous, filaments are fused to form a staminal tube around the style. Staminal tube...
Read more