What is founder effect?
Sometimes, a small number of individuals become isolated from a larger population to form a new population at some distance away from their place of origin.
The gene pool of the new population differs from the source population. It is possible that the change in allele frequency is so drastically different in the new sample that they become a different species. The original driftted population becomes founders and this effect is called founder effect.
Who among the Dryopithecus and Ramapithecus was more man like?
Ramapithecus was more man-like. It walked erect on its hind legs, ate hard nuts and seeds like modern man and had jaws and teeth similar to humans. It arose from Dryopithecus, which was considered to be a common ancestor of man and apes.
Dryopithecus was more ape-like with same length of arms and legs.
By what Latin name, the first Hominid was known?
The first hominid was known as Homo habilis. The brain capacities were between 650-800cc. They probably did not eat meat.
Among Ramapithecus, Australopithecines and Homo habilis who probably did not eat meat?
Homo habilis probably did not eat meat. This creature was the first human like being, with brain capacities between 650-800cc.
Louis Pasteur's experiments, if you recall, proved that life can arise from only pre-existing life. Can we correct this as life evolves from pre-existent life or otherwise we will never answer the question as to how the first forms of life arose? Comment.
Yes, we can correct this as life evolves from pre-existent life. The first life that appeared on earth was apparently the result of chemical evolution, i.e., the life originated from inorganic molecules which formed organic molecules, further forming complex compounds.
This finally resulted into simple cells and then simple organisms, wherein complexity development with time. However, once life originated, abiogenesis could not follow, and hence, life evolved further only through biogenesis, i.e., pre-existent life gave rise to new life.