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In the wild, male house finches (Carpodus mexicanus) vary considerably in the amount of red pigmentation in their head and throat feathers, with colors ranging from pale yellow to bright red. These colors come from carotenoid pigments that are found in the birds' diets; no vertebrates are known to synthesize carotenoid pigments. Thus, the brighter red the male's feathers are, the more successful he has been at acquiring the red carotenoid pigment by his food-gathering efforts (all other factors being equal). During breeding season, one should expect female house finches to prefer to mate with males with the brightest red feathers. Which of the following is true of this situation?a. Alleles that promote more efficient acquisition of carotenoid-containing foods by males should increase over the course of generations.b. Alleles that promote more effective deposition of carotenoid pigments in the feathers of males should increase over the course of generations.c. There should be directional selection for bright red feathers in males.d. Three of the statements are correct. e) Two of the statements are correct.
The bacteriophage genome consists primarily of genes encoding proteins that make up the head, collar and tail, and tail fibers. When these genes are transcribed given phage infection,
In long-term starvation oxaloacetate is directed away from the CAc and into the gluconeogenesis pathway. Pyruvate starts to be converted to support glucose synthesis while fatty acids are oxidized into acetyl-coA.
On physical assessment, nurse determines that his ankles and feet are very swollen. Which of these symptoms reflect left-sided heart failure and which reflect right-sided heart failure, and why give appropriate reason.
How would this method result in purification of tubulin.
A test tube contains starch, pancreatic amylase, and water. The buriet is negative. After 30 minutes, Benedict's test is positive. What substance is present.
Josie has been taking steroids for a prolonged period of time as treatment for rheumatoid arthritis. She has gained weight, especially in her face, and notices that her skin is thin and bleeds easily.
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.
express "transamination" and "oxidative deamination"
Assume a male patient is searching for the cause of his infertility. A karyotype shows he has two "X" chromosomes, but otherwise normal chromosomes.
Determine when cytosine is treated with bisulfate, the amino group is replaced with a carbonyl group. Identify the resulting base?
Explain afterpains and why do these occur more commonly in mulips than in primips? Why do breastfeeding moms have more after pains? What you tell a mom to expect in terms of how long she will have to have afterpains?
Hulton Getty, London. Massie, Robert K. Nicholas and Alexandra. Pedigree for hemophilia A in European royal houses. How would you understand this inheritance pattern.
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