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Tay-Sachs disease (infantile amaurotic idiocy) is a rare human disease in which toxic substances accumulate in nerve cells. The recessive allele responsible for the disease is inherited in a simple Mendelian pattern. For unknown reasons, the allele is more common in populations of Ashkenazi Jews of eastern Europe.
A woman is planning to marry her first cousin, but the couple discovers that their shared grandfather's sister died in infancy from Tay-Sachs disease. What is the probability that the cousins' first child will have Tah-Sachs disease, assuming that all people who marry into the family are homozygous normal?
What is the difference between spermatids and sperm cells? What is the name of the transformation of spermatids into sperm cells?
Discuss how does the cardiovascular system adapt with chronic endurance training to potentiate greater effects that you described in question 1?
define What enzymes would be released to digest.
A portion of a DNA template strand has the base sequence. Identify the sequence of the mRNA transcribed from this fragmentary template strand sequence.
Compute the number of RBC if the dilution is 1:50, the cell count is 400 cells counted in five (5) RBC squares of the hemocytometer.
A beetle (0.06g), a gorilla (200kg), a gecko (5g) and a hedgehog (5g) are all kept individually in 5x5m rooms that are maintained at a constant temperature of 25 C.
In interrupted mating experiments using an Hfr strain in E. coli, you find that two genes, bio and arg, are transferred at about the same time. A third gene, pab is transferred slightly later.
What fraction of demes in each set is likely to become fixed for allele A1 versus A2. Explain the differences in head movement available to fish.
How several bacteria were on the soap? How did they get there. Unlike squamous cells, cuboidal and columnar cells have large, open cytoplasms. Which functions of epithelial tissue are supported by having such big cells.
Mycoplasmas are the smallest living cells. They are spherical and have a diameter of about 0.33 μm (radius of mycoplasmas = 0.165 μm)a.
explain the energetic of catalysis in simplest terms.
When examining geology of a region for potential useable aquifers, what characteristics or factors would you consider? Also, taking into account certain natural and human factors, which areas would you avoid.
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