Weismann cut off tails of mice generation after generation but tails disappeared nor shoertened showing that ____________.
Darwin was correct
Appearance of recessive genes
gene frequency from one generation to next
None of the above
The presence of gill slits, in the embryos of all verebrates, supports the theory of ____________.
Biogenesis
recaptiulation
metamorphosiss
organic evolution
Frequency of a character increases when it is _________________.
Recessive
dominant
inheritable
adaptable
Two gegraphical regions separated by high mountains are ____________.
Oriental and Australian
Palaearctic and oriental
Nearctic and palaearctic
Neotropical and Ethiopian
'Golden age of dinosaurs' / Age of reptiles was ___________.
Mesozoic
Mesohippus
Eohippus
Psychozoic
What was absent in the atmosphere at the time of origin of life's
NH3
H2
O2
CH4
Which of the following is regardedas thedirect ancestor of modern man?
Homo erectus
Ramapithecuss
Homo habilis
Cro - mangnon man
Genetic drift operators only in ______________.
smaller populations
larger populations
mendelian populations
islands populations
Which of the following statements about fossil human species is correct?
Fossils of Homo neanderthalensis have been found recently in South America
Neanderthal man and cro - magnon man did exist for sometime together.
Mendelian populations
Homo erectus was preceded by Homo habilis
Extremities, tail and ear relatively shorter in animals living in cooler regions as compared to those inhabiting warmer zones. This is ____________.
Bergman's rule
Jordan's rule
Gloger's rule
Allen's rule
