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A son with Klinefelter syndrome is born to a father who has theX-linked skin condition called anhidrotic ectodermal dysplasia. The mother's skin is completely normal withno sign of the skin condition. In contrast, the son has patches of normal skin and patches of abnormal skin.Which parent contributed the chromosomally abnormal gamete, and in which meiotic division did nondisjunction occur?
How does real time PCR work to quantify the initial amount of the DNA template? How should the method be modified to quantify the initial amount of RNA template extracted from tissue or cells?
whats morula in the female ovum after 7 days plus whats the difference between the haploid and the opposite
Wild type e. coli can synthesize all 20 common amino acids, but some mutants, called amino acid auxotrophs, are unable to synthesize a specific amino acid and require its addition to the culture medium for optimal growth.
1. what are deuterostomes and protostomes and how are these concepts useful in biology? forget which opening comes
Belding's ground squirrels live in colonies. One of the advantages of living in a colony is that predation is decreased because individual squirrels will give alarm calls when a predator approaches the colony. Explain why this behavior of giving a..
You have 100 ml each of 400 mg/ml sodium phosphate, 250 mg/ml sodium chloride, and 100 mg/ml potassium nitrate.
A wild-type fruit fly (heterozygous for gray body and normal wings) is mated with a black fly with vestigial wings. The offspring have the following phenotypic distribution? 778 wild type, 785 black-vestigial, 158 black-normal, 162 gray-vestigial...
It is commonly reported that up to 50 percent of a cell's energy budget is spent on protein synthesis. Think about the properties of two hypothetical genetic codes constructed with the four common nucleotides.
Along with phenylpyruvic acid, ammonia is manufactured as a result of phenylalanine deamination. Could you think of a way in which the production of ammonia could be used as an indication of a postiive reaction?
Compare DNA to a cookbook. The book is kept in a library and cannot be checked out (removed). Start with the letters and words in the cookbook compared with the bases and codons in DNA; end with the amino acid chain being folded into a protein, an..
Assume you have found a new Xenopus gene that codes for a RNA binding protein. You are not sure what its function is but you are interested in finding out as much as you can.
Primary transcripts produced by RNA polymerases are generally faithful copies of the DNA template. However, most final/functional forms of these RNAs vary substantially from the primary transcript.Give an instance of an RNA class.
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