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A red kerneled wheat plant is crosssed with a white-kerneled plant, yielding an F1 plant with all red kernels. A self-cross yields a 15:1 red:white ratio. A testcross yields a 3:1 red:white ratio. Explain the results. Draw Punnett squares for both the self- and test-cross.
What series of nucleotide pairs in a Drosophila gene will encode the amino acid sequence met-trp-phe-trp-met (reading from the amino terminus to the carboxyl terminus).
Use the pKa of p-nitrophenyl (7.0) and the henderson hasselbalch equation to correct the concentration, since at pH 7.8 not all of the product is in the colored, visible form. Use 18,380 M^-1cm^-1 for the extinction coefficient.
In humans, oogenesis in comparison to spermatogenesis is different in that. cytokinesis is unequal during the meiotic divisions.
Most antibacterial drugs disrupt or destroy bacterial cellular characteristics that are different from those of eukaryotic cells or that may not even be present in eukaryotic cells. List and describe at least three cellular features of bacteria th..
Non-peptide transmitters still contain a specific mRNA sequence that can be recognized by in situ hybridization assays. Under such a situations, it is assumed that the non-peptide transmitter has been translated.
Calculate the number of ATPs generated from one saturated 10-carbon fatty acid. For this question, assume that each NADH molecule generates 2.5 ATPs and that each FADH2 molecule generates 1.5 ATPs.
Carbon cycles through the ecosystem between the atmosphere, organisms (such as producers, herbivores, and carnivores), and decomposers.
Two true breeding plants are crossed; one is true breeding for purple kernels and dwarf stems, and the other is true breeding for white kernels and tall stems. The F1 offspring all have purple kernels and tall stems. Two of these F1 plants are the..
If you wanted to measure the absorbance of hemoglobin, the red pigment of your red blood cell, what wavelength would be best? Explain why.
What is contributing to the decreased alveolar ventilation. A 22-year-old man was in a motorcycle accident with resultant neck injuries that led to partial paralysis of the upper and lower limbs. Approximately immediately his chest felt heavy and he ..
why The E-amino group of lysine has a pka of 10.5. what fraction of these groups will be protonated in a dilute solution of lysine at pH9.5
For each of the mutations below, which mutation is more likely to disrupt the structure of a protein that is, make a mutant protein that is less stable than the nonmutant protein?
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