A strain of asexually reproducing heterotrophic bacteria pro…

A strain of asexually reproducing heterotrophic bacteria produces 200,000 genetically identical individuals via binary fission. If a bacteriophage virus is introduced to the population and half of the individuals are killed by infection, what should we expect to happen to the genetic diversity of the bacterial population?

A forest population of flies utilize different elaborate cou…

A forest population of flies utilize different elaborate courtship rituals, which involve fighting other males and making stylized movements that attract females. One season, a mutation causes some of the flies to change their courtship rituals, which now only attracts a certain genotype of female to mate. If this situation persisted indefinitely, what is the most likely long-term outcome?

CIVE 519 – IRRIGATION WATER MANAGEMENT   1st MID-TERM EXAM  …

CIVE 519 – IRRIGATION WATER MANAGEMENT   1st MID-TERM EXAM   Note: The value of each question is 37.5 points. The exam is open book/notes. Write down assumptions. You can use a calculator or laptop (no internet access), but do not use a cell phone. Work alone. Time allowed for the exam is 1:15 (h:min).  Q1 (37.5 points). A given soil has a volumetric water content at field capacity of 28% and at wilting point of 18%. The crop root zone depth (maximum) is 0.5 m.    Answer the following questions showing your work, steps, and units:    If the farmer only allows half of the available water to be depleted between irrigations, how much water (net irrigation (not considering irrigation efficiency, losses)) would the farmer need to apply (in “mm” of water depth)?   

According to Egan, “The decrease in fluid pressure along the…

According to Egan, “The decrease in fluid pressure along the tube reflects a cumulative energy loss, as predicted by the second law of thermodynamics.  Available energy decreases because frictional forces (flow resistance) oppose fluid flow.”  Where are the two places that these frictional forces exist?