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As a consequence of independent assortment (Mendel's 2nd law) of chromosomes during meiosis, each mature gamete from an individual differs greatly in the combination of chromosomes inherited from the parents of that individual.
However, it could be a mistake to assume that every homologous chromosome that a gamete receives after meiosis is solely from the mother or father. Explain why this could be so using the following data.
A man with a dominant phenotype for a particular set of traits on the same chromosome, say finger length (F) and hair texture (H), with long fingers & curly hair dominant over short fingers and straight hair.
His wife shows the homozygous recessive phenotype for both traits, short fingers with straight hair and should produce gametes of the same genetic make-up. One of their children has the long finger and straight hair phenotype.
Diagram the homologous chromosomes, the gametes, any relevant events before and during gamete production and fertilization to support your argument explaining how this child could have this particular phenotype.
Explain the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
Ed Rivers, a 3rd year medical student, was alone in the hospital ER one night. It was unusually quiet that night, and the resident was getting some much needed sleep.
Briefly explain one aspect of ecology that you feel is relevant for all humans and discuss the difference between Clements and Gleason's views of how communities are structured?
There amino acid sequence of a protein of interest is put into a computer algorithm to search for known signals sequences. The data obtained shows a potential nuclear localization sequence (NLS) in the middle of the protein of interest.
Selective pressure is often thought to occur within the coding region of a gene but when the sum of Ka/Ks for each position is calculated, no positive selection is shown. Why is this? Can you think of a way to show positive selection in such a gen..
A plant cell is placed in a solution in a flask with solute potential of -0.6MPa. When cell and flask reach equilibrium, the cell's pressure is +0.5. At equilibrium.
Degrade a monoglyceride that has an 18-carbon fatty acid attached to it by Ester bonds. You will have to degrade the glycerol component followed by the fatty acid in presence of O2.
Assume you are part of a team of scientists exploring a small, newly found island. This island is located approximately 150 miles off the coast of the mainland.
Which of the following is true concerning linked genes.
If fifty microliters of anitbody enzyme solution with a concentration of 73 micrograms/ml is diluted with ten microliters of water.
What type of promoters are found in the T-DNA that control oncogenes and opine synthesis genes? What is the basis for tumor formation in the Agrobacterium-plant? What causes the tumor to form? What products of the bacteria are needed to cause plan..
A double stranded DNA molecule with the sequence shown here produces, in vivo, a polypeptide that is five amino acids long.
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