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
Two gegraphical regions separated by high mountains are ____________.
Oriental and Australian
Palaearctic and oriental
Nearctic and palaearctic
Neotropical and Ethiopian
Frequency of a character increases when it is _________________.
Recessive
dominant
inheritable
adaptable
Evolution is _____________.
Progerssive development of race
History and development of race along with varaitions
History or race
Development of race
Homologous organs are _______________.
Wings of insects and bat
Gills of fish and lungs of rabbit
Pectoral fins of fish and fore limbs of horse
Wings of grasshopper and crow
Genetic drift operators only in ______________.
smaller populations
larger populations
mendelian populations
islands populations
Humming birds and hawk illustrate ________________.
Convergent evolution
Homology
Adaptive radiation
Parallel evolution
Parallelism is ___________.
adaptive divergent
adaptive convergence of widely different species
adaptive divergent convergence of closely related groups
adaptive convergence of widley separated species
Basic principles of embryonic development were pronounced by _____________.
Von Bear
Weismann
Haeckel
Morgan
Which one of the following sets inculdes only the vestigial structures in man?
Body hair, olecranon process, coccyx patella
Wisdom teeth, mammarcy glands, coccyx, patella
Coccyx, nictitating membrane, vermiform appendix, ear muscles
Coccyx, body hair, ear ossicles, vermiform appendix
