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watching the 1939 movie “Freaks”. After you watch the show, you need to choose, based on a sexual selection cue, which individual in the movie would-would most likely make the best choice for creating a viable offspring with a genetically normal individual with no obvious maladies resulting in a normal […]

In the friut fly Drosophila melanogaster, vestigial wings and hairy body are produced by two recessive genes located on different chromosomes. THe normal alleles, for long wings and hairless bodies are both dominant. Suppose a vestigial-winged, hairy male is crossed with a homozygous normal female. a.)What phenotypes would be expected […]

Think about a strain of E. coli that has a mutation in the gene encoding the IIA protein of the phosphotransferase system. The transport of glucose is not affected by this mutation; the mutant IIA protein can be phosphorylated and the phosphate group is transferred to glucose just as it […]

Q1. The stomach contains hydrochloric acid. Why is it essential for the stomach to be so acidic? How does the stomach protect itself from being digested? Q2. Cyanide binds to complex IV of the electron transport system, preventing the reduction of oxygen to water. Explain the ultimate effects of cyanide […]