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Inversions are known to affect crossing over. The following homologs have the indicated gene order (the filled and open circles are homologous centromeres): filled ABCDE open ADCBE A) considering the position of the centromere, what is this sort of inversion called? B) diagram the alignment of these chromosomes during meiosis. […]

Calculate the free energy change of pumping Ca+2 from the cytosol, where its concentration is about 1.0 x 10-7 M, to the extracellular fluid, where its concentration is about 1.0 mM. Assume a temperature of 37oC and a transmembrane potential of 50 mV (inside more negative) for the plasma membrane. Calculate the […]

1. Observe the chamelion/insect interaction in the image found: Identify two evolved traits that provide survival benefits to either the chamelion, the insect, or both. For one of the traits, speculate about the trait’s history in the species. What was the creature like before the trait appeared? Genetic changes don’t […]

Q1. Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also the suspected cause of anoxic “dead zones” in the ocean. Which might help reduce nitrate pollution? Q2. A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a […]