Human Evolution Welcome to your Human Evolution 1. Which one of the following is not a vestigial part in human beings? Segmental muscles of abdomen Finger nails Coccyx Third molar on each side in each jaw2. During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result". To correct your friend's misconception Characteristics acquired during an organism's life are not passed on through genes Overproduction of offspring leads to a struggle for survival Only favourable adaptations have survival value Spontaneous mutations can result in the appearance of new traits3. Lamarckism cannot explain Long, narrow, limbless body of snakes Webbed toes in aquatic birds Weak muscles in the son of a wrestler Heterophylly4. The first scientist who proposed his theory of evolution was Darwin Lamarck Wallace Mendel5. The cranial cavity of the modern man was 900-1000 c.c 450-650 c.c 1300-1600 c.c 600-900 c.c6. The extinct human ancestor who ate only fruits and hunted with stone weapons was Australopithecus Dryopithecus Ramapithecus Homo erectus7. The prehistoric man which lived on Earth during late Pleistocene period was Atlantic man Peking man Australopithecus Neanderthal man8. The extinct human who lived 1,00,000 to 40,000 years ago in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating forehead, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was Homo habilis Neanderthal human Ramapithecus Cro-Magnon humans9. The brain capacity of Homo erectus was about 900 c.c 1200 c.c 650 c.c 1600 c.c10. The theory of Natural selection was proposed by Lamarck Mendel Darwin Wallace11 out of 10Please fill in the comment box below.