If there are two forms of a specific enzyme in a population, and if the relative frequencies of the individuals possessing each form of the enzyme changes, then certainly there is:

 

1.	mutation	2.	genetic drift
3.	gene migration	4.	evolution

The best evidence for tracing phylogeny amongst a group of organisms will be similarities in their:

Industrial melanism is an excellent example of ‘evolution in action’ where the selecting agent is:

Members belonging to the same biological species are potentially able to:
1. compete with members of other species only
2. express all the same genes in all their cells
3. breed with members of other biological species
4. interbreed and produce fertile offspring

Flowering plants (angiosperms) first appeared during :
1. Paleozoic era
2. Carboniferous period
3. Cretaceous period
4. Cenozoic era

Species formation without branching of the evolutionary line of descent is called as:
1. anagenesis, or phyletic evolution
2. cladogenesis, or divergent evolution
3. convergent evolution
4. allopatry

In which of the following groups of organisms is the sympatric speciation most likely to occur?
1. amphibians
2. arthropods
3. plants
4. birds

The wings of an insect and the wings of a bird are examples of:

The first mammals arose in the _____ period:
1. Carboniferous
2. Jurassic
3. Cretaceous
4. Triassic

Which theory, regarding the origin of life, is alternatively also called “panspermia”?