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Q. The phenotype of vestigial (short) wings (vg) in Drosophila melonogaster is caused by a recessive mutant gene that independently assorts with a recessive gene for hairy (h) body. Suppose that a cross is made between a fly with normal wings and a hairy body and a fly with vestigial wings and normal body hair. The wild-type F1 flies were crossed among each other to create 1024 offspring. What phenotypes will you suppose among the 1024 offspring, and how many of each phenotype would you expect?
A population is composed of equal numbers of the genotypes AA, Aa, aa. The offspring produced by these genotypes number 756, 699, and 420, respectively.
The western blot technique is used as the comfirmatory test fo a positive Elisa result bacuase it provides better specificity. How does this technique povide better specificity?
Think about a population of one hundred individuals and the frequency of the A allele is 0.8 and the frequency of the a allele is 0.2. If the following fitness values for each genotype are applied to the next generation.
In cases of severe iron deficiency, cellular respiration can not proceed normally. Disregarding problems related to hemoglobin or red blood cells, at what stage of cellular respiration would lack of iron cause the greatest problems?
compare the relative size of the coelom with that ofthe mantle cavity in the freshwater clam.
A genetic mutation occurs that alters the specificity of theGolgi enzyme that phosphorylates mannose residues in the oligosaccharides of glycoproteins. The effect of the mutation is such that the enzyme now indiscriminately and randomly phosphoryl..
Why is it important to have an antibiotic resistance gene in the cloning plasmid?
How might you find out 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.
A can of Mountain Dew soda contains 46 g of sugar. Assume that your body completely digests this sugar, 170 kcal of heat energy is available from the sugar. Around how many grams of water will you have to evaporate as sweat to lose this 170 kcal of e..
Discuss the defining characteristics and methods of reproduction of organisms belonging to the Kingdom Fungi in general,
Describe the "optimal" conditions for photosynthsis. What climate conditions favor plant growth ?
Large folds in the stomach known ______ increase its surface area and also enable it to fold on itself when empty. The ______ is a valve that enables partially digested food out of stomach into the ______.
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