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Consider the following scenario: Deer Valley Lodge, a ski resort in the Wasatch Mountains of Utah, has plans to eventually add five new chairlifts. Suppose that one lift costs $2 million, and preparing the slope and installing the lift costs another $1.3 million. The lift will allow 300 additional skiers […]

Dentinogenesis imperfecta is a tooth disorder involving the production of dentin sialophosphoprotein, a bone-like component of the protective middle layer of teeth. The trait is inherited asan autosomal dominant. The mutant gene, located on chromosome 4,occurs in about 1 in 6000-8000 people. Assume that a man with dentinogenesis imperfecta, whose […]

Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype Number wild-type 67 ebony 8 ebony, scarlet 68 ebony, spineless 347 ebony, scarlet, spineless 78 scarlet 368 scarlet, spineless 10 spineless 54 (a) What […]

Suppose that you discover a new life form on Mars. These organisms have DNA containing the same four nucleotides as Earth DNA. They also make proteins using a triplet code, so they use the same 64 codons that Earth organisms do. Martian proteins are also similar to Earth proteins, but […]