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Question: Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. If reinforcement of postzygotic isolation is occurring, what would you expect if you compare the calls of the two species in zones of sympatry versus zones of allopatry?A) Calls would be about the same in both areas.B) Calls would be more similar in areas of sympatry.C) Calls would be more different in areas of sympatry.D) There is not enough information to decide what is happening.
A protein that tests disulfide positive is oxidized. Spectrophotometry readings are taken for both unoxidized and oxidized protein.
Do you think biochemical testing must be recommended to detect the deleterious gene in Mrs. Lehman. Which one increased their alveolar ventilation, or do they stay the same? Why with appropriate reason.
Describe a signaling pathway deregulated in cancer that involves pRb and p53 as players. Have any advancements been made in the understanding of these pathways since the provided review was written?
The resting potential of a neuron is approximately -60mV. Neurons maintain this electric potential by maintaining a balance of ions inside and outside the membrane. Which of the following is the most significant factor in determining this balance.
The mean value of a trait is 250 units and the h2 for the trait is .50. A male and female measuring 240 and 280 units respectively are selected for breeding and they produce several offspring. Find expected value for the trait among their offspring.
On an autosome, genes A and B are twenty map units apart. An AABB male mates with an aabb female. What % of the gametes produced by their hybrid offspring will be Ab?
Two intracellular molecules A and B are continually synthesised at a constant rate of 1000 per molecule per cell. Each molecule of A survives an average of 100 seconds. While each molecule of B survives an average of 10 seconds.
Describe why dobutamine is sometimes given to patients to simulate the effect of exercise. What drug would you suggest a person take to attenuate the effect of dobutamine?
Determine what would be the probable outcome if mRNA molecules coding for human red blood cell antigen A were inserted into two solutions.
The thalamus is a brain structure that constantly recieves incoming visual, auditory, olfactory, tactile, thermal, and nociceptive sensory data at any given instant.
Assume that the rate of sea-floor spreading was constant during the 1-million-year period depicted above, what have to be the approximate age of marine fossils found in undisturbed sedimentary rock instantly overlying the igneous rock at the arrow la..
2-types of signals have been implicated in metaphase checkpoint arrest. Think about the results of a recent experiment in which the unattached kinetochore of a monoattached chromosome was destroyed by a laser beam.
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