Many biologists believe that macroevolution is just an accumulation of microevolutionary events. Does this mean they assume a gradualist perspective over a punctuated one? Why or why not?
What will be an ideal response?
Responses may go either way. An accumulation does imply gradual change, but if there is some threshold required for speciation it may result in a punctuated pattern.
You might also like to view...
Which of the following statements correctly traces the route of water through a sponge?
A. enters through the osculum into the spongocoel and exits via the ostia B. enters through the spongocoel into the osculum and exits via the ostia C. enters through the ostia into the osculum and exits via the spongocoel D. enters through the ostia into the spongocoel and exits via the osculum E. enters through the osculum into the ostia and exits via the spongocoel
In many species, sexual selection is the most probable cause of ____, differences in the size or appearance of males
and females.
a. adaptive radiation b. Inbreeding c. mutation d. polymorphism e. sexual dimorphism
When constructing a YAC, why must a large DNA insert be included?
A) The inserted DNA base pairs with DNA in the genome. B) YACs that are too small do not segregate properly during mitosis. C) The inserted DNA functions as telomeres. D) The inserted DNA contains origins of replication needed for maintenance of the YAC. E) The inserted DNA allows YACs to be used in both eukaryotic and prokaryotic cells.
ATP contains ____
a. alanine b. arginine c. phosphate d. tyrosine e. glucose