#Question id: 13130
#Unit 10. Ecological Principles
Biologists performed an experiment with flies to examine the effects of population size on the maintenance of genetic variation and on egg-to-adult survival. From a large source population, they randomly assigned eggs to three experimental populations of size N, equal to 20, 60, and0100. For later generations, they collected N eggs from each population and moved them into identical vials that co0ntained f2re0sh me4d0ium. Th6e0y coun8te0d the number of adult flies that emerged and used tissue samples from the adults for genetic analyses. Genetic variation was measured by scoring alleles at several polymorphic loci and expressed as the average number of alleles at those loci. The results are summarized in Figure 1 and Figure 2 below.
Which process best explains the dynamics of genetic variation observed in this experiment?
#Question id: 11667
#Unit 7. System Physiology – Animal
Which of the following is characteristic of juxtamedullary nephrons?
#Question id: 23290
#General Aptitude
#Question id: 7307
#Unit 5. Developmental Biology
Which of the following statements regarding flowering plants is correct?
#Question id: 11089
#Unit 7. System Physiology – Animal
A 45-year-old man inhaled as much air as possible
and then expired with a maximum effort until no more air could be expired. This
produced the maximum expiratory flow-volume curve shown in the following
diagram. What is the forced vital capacity of this man (in liters)?
