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A homozygous plant with 20 cm diameter flowers is crossed with a homozygous plant of the same species that has a 40cm diameter flowers. The F1 plants all have flowers 30cm in diameter. In the F2 generation of 512 plants, 2plants have flowers 20 cm in diameter, 2 plants have flowers 40cm in diameter, and the remaining 508 plants have flowers of a range of sizes in between.
a) assuming that all alleles involved act additively, how many genes control flower size in this plant?
b) calculate the mean, variance, and standard deviation for flower diameter in the backcross progency.
Of the fat soluble vitamins, vitamin A is the most likely to produce toxicity symptoms. What drug(s) are likely to contribute to such a toxicity?
Determine what binds to macrophage receptor proteins and what macrophage signaling cascade(s) convey information received in this way to the nucleus?
Draw a biomechanical force diagram for the flexor carpi radialis muscle. Label the fulcrum, bones used as levers, force application point, and the resistance. What kind of lever system does this represent?
A certain membrane protein has palmitic acid covalently bonded to its N-terminal amino acid. The protein consists primarily of charged amino acids, particularly Lys and Arg. Do you think this will be a periperal or integral membrane protein? Why? ..
As you know Griffiths, and Avery, MacLeod and McCarty 1st experimented with the concepts of lateral gene transfer in bacteria as it relates to transformation.
An ecologist observed that sugar maples seemed to dominate the understory of a forest while the larger trees were mainly white oaks. Are the maples replacing the oaks?
You are studying a single-gene locus with two alleles in a population that is in Hardy-Weinberg equlibrium. Examination of a large sample of individuals from the population reveals there are five times as many heterozygotes as there are homozygote..
The expression and purification of rGFP started with the increase of the bacterial culture and ended with elution of rGFP off the Ni+2 agarose coloumn.
If a DNA nucleotide sequence is CATAAAGCA, what is the mRNA nucleotide sequence that would base-pair with it?
Often right parietal damage cause hemispatial neglect. Describe 2 deficits that may be displayed.
Two pros and two cons of GM food. From those pros and cons, do you think GM foods are safe to eat? Why or why not.
What is the difference between orthologs and paralogs and why are only orthologous comparisons useful for determining evolutionary relationships?
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