How do desert mice maintain osmotic homeostasis? the sandy inland mouse (leggadina hermannsburgensis) is an australian desert mammal that can survive indefinitely on a diet of dried seeds without drinking water. to study this species' adaptations to its arid environment, researchers conducted a laboratory experiment in which they controlled access to water. nine captured mice were housed in individual cages and given birdseed (10% water by weight) to eat. in part a of the study, the mice also had unlimited access to tap water; in part b of the study, they were not given any additional water for 35 days, similar to conditions in their natural habitat. for each mouse at the end of each part of the study, the researchers measured the osmolarity and urea concentration of the urine and blood. g?

Mike was adopted, and his biological family history is unknown. although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. mike has heard about commercial laboratories that can compare segments of your dna to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. the results of these types of tests are highly inconclusive. if mike's dna showed that he shares similarities in a segment of dna with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. these tests can cost more than $2,500 and are not covered by many insurance companies. do you think that mike should undergo the genetic tests? explain your answer. what are the potential pros and cons of having such tests done? describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations.

Which identifies the main purpose of biological taxonomy?

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius