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A particular Drosophila female that is wild-type in appearance is known to be heterozygous for the three recessive mutations black body (b), curved wings (c) and purple eyes (p). When this female is testcrossed, the following progeny result:Black body, purple eyes - 27Curved wings -23Black body, curved wings - 361Purple eyes -379Black body - 92Curved wings, purple eyes - 108Wild type - 6Black body, curved wings, purple eyes - 4
a. Determine the order of these three genes on chromosome 2 of Drosophila. Diagram the allelic arrangement of these three genes on the two homologs carried by the heterozygous female used in this testcross. Indicate the correct gene order.
b. Determine the map distances between these loci. Show your calculations.
c. Determine an interference value for this genetic interval. Show your calculations.
What are the causes of gastroesophageal reflux disease (GERD)? What is the typical prognosis for GERD and how is it treated.
Birth control pills maintain a high blood level of estrogen and progesterone. Determine what is happening in the ovary when the blood level of estrogen is high?
A patient has a dead space of 150 mL, functional residual capacity of 3 L, tidal volume of 650 mL, expiratory reserve volume of 1.5 L, total lung capacity of 8 L, and respiratory rate of 15 breaths/min. What is the residual volume?
define how this cell would be activated the cellular and molecular interaction(s), and the various steps and factors leading to an appropriate immune response to clear the toxin.
It has been shown that the repair of UV induced dimers in a gene is coupled to transcription. Suggest a model for this and any experiments you would use to test your model.
How long would it take one starting Ecoli cell growing at a constant generation time (g) =20 mins (With a growth rate, k, of 3 hours) to generate an aggregate cell mass equal to the mass of the earth? Assume no nutrient limitation or growth inhibi..
Explain how turgor pressure (water concentration) regulates opening and closing of stomata. What other factors are involved in controlling stomatal opening and closing?
What are some traditional and modern fertility control mechanisms for humans? What accounts for increasing population size when fertility rates are declining? What are pro-natalist pressures and factors that reduce family size?
Research how a SPECIFIC biotechnology application within the above GENERAL examples (or ones not listed above) is used today. Example: Insulin production in bacteria is an example under the general topic of recombinant organisms.
Early in development, most human cells turn off expression of an essential component of telomerase, the enzyme responsible for addition of telomere repeat sequences to the ends of chromosomes.
Water is most dense and therefore heavier at 4 degrees Centigrade. At zero degrees Centigrade ice forms and can float on liquid water. Assume ice were most dense at zero degrees Centigrade. Select the best explanation of what would happen in aquatic ..
What does "international culture" mean and how are some of health disparities noted in underdeveloped global communities derived from these international cultural factors? Provide examples to support your discussion.
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