Female with pentsuria. Makes no detectable "X" protein. X Is the reductase. Parents are third cousins (Each make -50% of normal “x" protein. Only patient has disorder. No "x" MRNA present. Genomic DNA analyses shows no "x" DNA sequences and “x"s first and last exon nave no amplification for PCR. Normal shows at 1.9 kb band. s mutation because of deletion of promoter, or del. Of whole gene locus? Why?

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Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.