Design an experiment that would allow you to determine if a particular nucleus in a Drosophila embryo is capable of directing development of an entire new fly
What will be an ideal response?
Experiments in support of such genomic equivalence include the following: the observation that chromosome number and structure do not consistently change in different cells of an organism, nuclear transplantation in amphibians, and the presence of genes but no gene products in some tissues (hemoglobin, for example). For the Drosophila experiment, one could do nuclear transplantation similar to the classic experiments in amphibians and recent experiments in mammals or transplant a cell from embryos of one genotype to the posterior end of the early embryos of another genotype. The transplanted cells would be reprogrammed into germ cells by the posterior P granules. The transplant can be detected in the next generation by the recognizable different phenotypes due to different genotypes of the donor and recipient.
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Eukaryotic mRNA but not prokaryotic mRNA contain 5' untranslated regions
A. True B. False
A patient has very low plasma glucose levels, a condition called hypoglycemia. The problem is not associated with
insulin, but with the secretion of glucocorticoids. How would you evaluate the patient to determine where in the feedback system the problem is located?
What will be an ideal response?What must be present in order to absorb calcium?
What will be an ideal response?
What human activities release the majority of the carbon dioxide found in the atmosphere?
A) exhaling (cellular respiration waste products) B) adding decomposing garbage to landfills C) burning wood for cooking fires D) burning fossil fuels