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The mythical Eurasian magnetic pinching beetle is able to produce and detect subtle variations in local magnetic fields. Male magnetic pinching beetles provide extensive parental care; they stick eggs to their backs using biomagnetic fields and once the space on their back is occupied, they cannot accept more eggs. Once the eggs hatch, males locate and process ferrous-rich food for the young. Female magnetic pinching beetles, on the other hand, provide no parental care. Instead, she simply leaves her tiny eggs with each of the several males with which she mates. Females attract males by producing a long-range magnetic pulse, which also serves as an honest index of female genetic quality and health because it is energetically costly to sustain and impossible to fake. They broadcast this mating call from large metal objects that amplify the signal. Males select females mates based on several factors, including the sheen of her metallic shell and the iron content of a small pebble she provides before laying eggs on the male's back. All this mate choice and reproduction happens quickly; when the rainy season comes, adults get rusty and, no longer able to move, die. Given this description and what you know about mating system evolution, which of the following appear to be reasonable, fitness-enhancing strategies?A. Instead of spending time finding her own iron-rich pebble, females might enhance their fitness by stealing pebbles from other females.B. Low-quality females could enhance their fitness by sitting within the long-range magnetic signal of a high quality female and attempting to intercept males as they come in to mate.C. When a female finds a male, she could enhance her fitness by depolarizing him, causing him to shed the eggs other females have attached to his back and thereby making more space for her own eggs.D. A female could defend prime-broadcasting locations from other females, giving her exclusive access to the males attracted to the signal she broadcasts from her high-quality spot.E. Females could stick themselves magnetically to a male, thereby preventing him from mating with other females.F. Females could reverse the polarity of the magnetic sensing organ in a male after mating with him, thereby making him unable to find other females.G. All of the above are sound fitness-enhancing strategies.H. None of the above are sound fitness-enhancing strategies.
Assume you have an animal cell in a culture and you add Carbon fourteen specifically labled glucose to the culture so that you can track the movement of carbon within the cell.
Suppose that the breeder selects plants that mature in 69 days for the next generation. Approximation the time required for the next generation to mature. What kind of infection do you believe she has in this hand.
Explain the changes in ventilation that occur during exercise. How are these changes produced and how do they affect artrial blood gases and pH?
After one minute, ask your subjects to close their eyes. Once their eyes are closed, ask them to recite everything in the room that is different colour than the one they were looking for, for in case, anything and everything that is green.
Examine the anatomical structure of ten different organelles in the cell and their respective functions and Analyze five different types of connective tissue with examples of functions and location within the body.
The pH of the inner thylakoid space had been measured, as have the pH of the stroma and the cytosol of a particular plant cell. Why will this cause the pH in the thylakoids to be lesser than the pH in the stroma.
Re-examine the timeline of the laboratory medicine history and discoveries. Post and discuss one discovery/issue incident which you feel moved the laboratory profession forward in greatly assisting cliniciana.
If Mendel chose corn instead of pea plants to conduct his first experiments, what is the maximum number of traits he could have documented in breeding experiments in order to establish his law of segregation (each trait is determined by two factors) ..
Explain a cost to C4 photosynthesis in moist, cool conditions and why C3 plants are often CO2 limited at high temperature.
Think about a mature megaspore mother cell containing twenty DNA molecules to answer the following questions concerning meiosis.
A dry gas sample has been extracted from a well and analyzed via GC to have the given mole fractions: 0.91 methane, 0.035 propane.
How might you deterine whether the turbidity in your nutrient broth tube was from a mixture of different microbes or from the growth of only one kind of microbe.
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