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Carrying a mutation in one copy of the BRCA1 gene leads to increased risk of developing breast and/or ovarian cancer because as a woman ages, she risks mutating the other copy of the BRCA1 gene. Surprisingly, analysis of some cancers in BRCA1 carriers revealed one mutant copy and one normal copy of BRCA1 at the sequence level. Choose from below the most likely explanation for this observation in the tumors.
a. Cells giving rise to the breast cancer also lost expression of one copy of the p53 gene.
b. The normal BRCA1 copy is methylated, thus is not expressed.
d. The mutant BRCA1 copy is methylated
question 1 evaluate the cost and benefits both economically amp socially of using coal oil and natural gas. in your
Using one of these ecosystems,(indigenous forest, grassland, desert, fresh water pond, etc.) Draw a diagram of a food chain, using at least four organisms at different levels.
A population of mice can have either black (B) or white (b) fur and long (L) or short (l) tails. Suppose if this is the gamete pool for the parental generation, what is the expected frequency of B/l:b/l zygotes in the next generation,
Which of these processes results in depletion of protons inthe matrix and buildup of protons in the intermembrane space of the mitochondrion?
Farmers often grow alfalfa, clover, or bean plants in fields
The eye of a category 2 hurricane is 450 nautical miles away and forecast to come ashore at your coastal location. The tropical storm-force winds extend 150 nautical miles. The hurricane is moving at 15 knots. Assuming it takes 18 hours to evacuat..
Bisphenol A (BPA) binds to estrogen receptor with a Kd of 2.1 x 10-7 M and an association rate of 1.3 x 106 M-1s-1. Calculate the dissociation rate, kd, including appropriate units.
please answer each of the following questions. please ensure that your responses are at least 3 to 5 sentences in
At 45C, the vapor pressure of water for a glucose solution in which the mole fraction of glucose is 0.080 is 65.76 mmHG. Calculate the activity and activity coefficient of the water in the solution.
What could be the base sequence of the RNA after transcription happens? Explain the importance of first and last codons? Specify the meaning do these codons have for the protein synthesis?
As raise in human population lead to expansive industrialization and cultivation, increased carbon emissions are resulting in global climate change.
What happens to a cell with low ATP concentrations? Give step by step process that occurs within the cell.
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