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Q1. Activation of T cells requires that antigens be presented from antigen-presenting cells, not simply by exposure to the antigen in solution. What biological rationale may underlie this requirement - consider both from the perspective of how this can aid in the generation of a cytotoxic T cell response, and how it might aid in avoiding undesirable T cell responses.
Q2. What is the biochemical pathway that corresponds to duplicate dominant epistasis in genetics? There is a 15:1 ratio of phenotypes, there are two genes involved: A and B. but what is biochemical pathway that causes this ratio to form?
At what stage of the cell cycle are the chromosomes satisfactorily condensed that they FIRST become visible under the light microscope.
Barry Snowden, owner of Barry's Snowboards, would like to develop a page that would explain a list of snowboard types along with their descriptions.
What type of electrode would they need to use (express material and design)? Provide a simplified schematic (circuit model of the electrode) described in the notes. Also discuss at least two benefits of an exoskeleton as well as how arthropod grows ..
They are though more closely related to each other than they are to either of their parents. since now they know their child will not be a hemophiliac! Explain how they know this.
If populations are sustaining growth at r = 0.088 and the population in 2001 is 3000 individuals, in what year would snow geese be taken off an endangered species list.
If a maize plant is heterozygous for the alleles for pigmy and crinkly-leaf (both recessive to normal size of plant (S) and normal leaf (L) is self pollinated and 208 seeds are subsequently collected and germinated, how various would you expect to sh..
The number of bacteria in saliva samples was determined by collecting the saliva, making serial dilutions, and inoculating nutrient agar through pour plate method. The plates were incubated aerobically for 48 hours at 37C.
X-linked Recessive: colour-blindness, malepatterned baldness, hemophilia Color-blindness is caused by a recessive gene (b) on X chromosome. Predict phenotypes for children of a female carrier with a normal male. A genetic wasteland.
A mole of an assured compound contains 207.7 g of lead and 32.00g of oxygen. Without doing any calculations, tell whether a formula Unit of a compound contains more atoms of lead or more atoms of oxygen. Explain in details.
Most people with Broca's aphasia suffer from partial paralysis on the right side of body. Most people with Wernicke's aphasia do not. Why.
In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population.
What offspring phenotypes would you expect from mating between a 15-cm and 30-cm pig. How many pairs of genes are regulating the tail length character? (Hint: count the phentotypic classes, or find out the sum of the ratios of the classes)
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