For geneticists, why is it important that genetic variability exist in the population under study?
What will be an ideal response?
Genetic variation in individuals of a population is important for studying the inheritance pattern of those characteristics. If all the members of a population were identical for the trait under study, their progeny would be as well, and it would be impossible to determine how the trait was being passed on to the offspring.
You might also like to view...
The process by which two molecules covalently bond into a larger one is
a. condensation. b. cleavage. c. functional group transfer. d. electron transfer. e. rearrangement.
In order to reproduce, to what type of wetland must certain species of salamanders migrate so their aquatic eggs can develop free of predatory fish that are unable to survive the annual drying up of this wetland?
A) vernal pond B) intertidal zone C) marsh D) swamp
Invasive fungi have caused ecological disasters in the U.S. during the last century. The American chestnut tree commonly grew in forests from Michigan to Louisiana and from Maine to Georgia. In the 1900s Cryphonectria parasitica, an invasive species, commonly known as Chestnut blight, decimated the chestnut tree population leading to one of the worst ecological disasters in U.S. history. It is thought that the invasive fungus was imported from Japan and China. Other invasive fungi have destroyed large numbers of redbay, dogwood, and oak trees. Is human activity to blame for such disasters? What can be done to alleviate this problem?
What will be an ideal response?
Changes that have occurred in living organisms over the past four billion years are due primarily to
A. interaction of genetic and environmental changes. B. continental drift. C. extinction of species. D. floods and formation of glaciers. E. changes in atmospheric composition.