#Question id: 13132
#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 other process appears to have substantially influenced the outcome of this experiment?
#Question id: 1278
#Unit 4. Cell Communication and Cell Signaling
Vertebrate gap junctions are composed of:
#Question id: 11483
#Unit 7. System Physiology – Animal
Experiments with genetically altered mice showed that the mice would consume abnormally high amounts of bitter-tasting compounds in water after their ________.
#Question id: 9192
#Unit 9. Diversity of Life Forms
The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to
#Question id: 5203
#Unit 11. Evolution and Behavior
The biggest problem with the shotgun technique is its tendency to underestimate the size of the genome. Which of the following might best account for this?