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Question: In the fungus Neurospora (a haploid), the td+ allele is needed for the cells to build the amino acid tryptophan (trp). The mutant allele td- results in an inability of the fungus to make its own trp, so that growth can occur only if tryptophan is supplied in the medium. Another gene, su, assorts independantly of the td gene. Su+ has no effect, but su- suppresses the td- phenotype so the cells are able to make trp. Therefore, strains that are td-su- do not require tryptophan for growth. If a td- su- strain is crossed with a genotypically wild-type strain (td+ su+), what genotypes and phenotypes are expected in the progeny, and in what proportions?
Hematopoietic stem cells cultured in the presence of which receptor differentiate into T cells rather than B cells?
Determine what physical differences did the mutant worm? What differences in behavior or movement did you identify the same characteristics of the mutant C. elegans?
Joe Average has just been frightened by a very loud noise as he was taking a very difficult physiology exam. In response, his adrenal glands have released a large amount of adrenaline into his circulation. Which of the effects would you expect to ..
Make a short essay on mechanisms by which redox reactions in mitochondria lead to the production of ATP by phosporylation of ADP to ATP
Think about a virus with a plus strand RNA genome 8 kb in length, which encodes eight proteins. Determine which of the following is a known mechanism for producing all eight proteins from this genome?
Assume you have a set of 4-Hfr strains and you carry out a series of crosses with a multiply marked recipient that is auxotrophic for many different nutritional markers.
What does information suggest about the transmission.
n a folded protein, most of the nonpolar amino acids are buried inside the protein fold, whereas the polar and charged side chains are exposed to the components in the cytosol.
Frank found himself in the midst of an ethical dilemma at work, and was using an ethical decision-making matrix, to address his work and personal values. Frank was most likely in which phase of the Ethical Decision-Making Framework.
Jimmy, a new undergraduate researcher in the lab, is told to make a vector having a copy of the CELLBIO gene from Dr. Acosta's genome as well as a selectable gene, Ampr.
A couple has 4 children. Neither the father nor the mother is bald; one of the two sons is bald, but neither of the daughters is bald. If one of the daughters marries a non bald man and they have a son, what is the possibility that the son will becom..
Once apoptosis starts, a detachment takes place in extra cellular matrix. This is calleda. In which organelle translation takes place inside the cell?
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