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Q1. The trend in the U.S. is having children later in life than previous generations. What effects may this trend have on the incidence of late-acting dominant lethal alleles in the population?
Q2. How many generations would it take to eliminate at least 95 percent of the alleles for the recessive gene for the inability to taste PTC if a tyrant eliminated all those who might not taste PTC from every generation before they can pass on their recessive alleles?
Gel filtration column was calibrated with blue dextran, its elution volume found to be 17.4 mL. Then, unknown protein and BSA were ran through the same column and eluted in 43 mL and thirty-six mL correspondingly.
Antibiotic resistance is a wide spread public health issue. Explain why resistance develops so quickly, spreads so rapidly and widely, and is so hard to eradicate
Explain what is meant through a negative feedback loop and how these work in terms of regulating a metabolic pathway. provide an example of a negative feedback loop in the glycolytic pathway.
Assume you recently found a new variety of sweet pea plants in the area surrounding Chernobyl that cannot be crossed with the sweet pea plants used in Mendel's experiments.
What are the two major hypotheses for the evolutionary history of introns in prokaryotes and eukaryotes? What is the evidence supporting each of these possibilities? What kind of additional evidence, if available, could help resolve this debate.
Describe the various strategies for the excretion of nitrogenous wastes employed in higher animals (chordates), both human and non-human.
Determine characteristics distinguish the animals and the animals are thought to be monophyletic. What is your explanation for it.
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?
Explain why it is very important to have a pure culture and not a mixed culture when performing biochemical tests.
After reading the article titled, "Epulopiscium fishelsoni, Big Bug Baffles Biologists!", use your knowledge about the limits to cell size and speculate as to why these cells can grow so large.
What would happen to the progeny of a cell that proceeded to mitosis and cell division after entering S phase but had not completed S phase? Keep in mind that highly condensed chromatin, including the centromere region, is replicated late in S pha..
Which of the following could most likely be occurring in a population that is not evolving? (A population in Hardy Weinberg Equilibrium).
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