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Question
Considering epistasis in cattle, there is a gene that allows horns to be either beaded or smooth. There is a second gene that controls the production of the protein that allows horns to be formed. If a cow can make no horns, it is called a polled cow. Cross a beaded horned cow that is heterozygous at both sites times a smooth horned cow that is heterozygous for protein production. Show me the genotypes of the P1 and the genotypes and phenotypes of the F1. Of the F1 cattle, cross one of the beaded cows times one of the polled cows so you make sure you see the most polled cows as possible in the F2.
What is the connection between chlorophyll molecules and water in the process of photosynthesis? Clearly explain what happens to all parts of the water molecule
Explain in molecular detail and in no more than six sentences. Hint: the answer begins with expulsion of CO2 into the blood stream and ends with ventilation
How does the karyotype of subject B below compare with that of the normal karyotype? What is the gender of subject B?
There are approximately 4000 DNA sites in the yeast genome which could potentially bind the yeast transcription factor GAL4, but only 10 sites control genes necessary for galactose metabolism.
If two parents are heterozygous carriers of CF, show a pedigree with four children showing the incidence of carriers and afflicted children. If each unafflicted child (carrier or not) has a 1 out of 30 chance of mating with another carrier of CF, ..
What are some common conditions/diseases of the respiratory system?
How is excretion handled by the different invertebratephyla? Why does photosynthesis produce O2 waste?
Describe three structures found in plant cells but not animal cells. Describe the function of each structure, and how each benefits plant cells but is not necessary for animal cells
Describe three differences between RNA and DNA with respect to their chemical composition and structure. Provide a detailed description of each characteristics you chose in your response.
The restriction enzyme ECOR I cuts DNA leaving 5' overhangs, Pst I leaves 3' overhangs after cutting DNA and SMA I leaves blunt ends on the fragments it produces.Indicate wheter DNA ligase can join the pieces of DNA.
A doctor can test the contents of your urine and determine your overall health. A urinalysis is also used to test for illegal drug use.
Why is a sucrose-phosphate buffer used in preparation of liver homogenate?
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