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acquired trait: A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation (for example, the large muscles of a weightlifter).
In a population at equlibrium, mating must be random.Recent years have seen an explosion of male joblessness and a steep decline in men’s life prospects that have disrupted the “romantic market” in ways that narrow a marriage-minded woman’s options: increasingly, her choice is between deadbeats (whose numbers are rising) and playboys (whose power is growing). Right Barbara Dafoe Whitehead, the author of Why There Are No Good Men Left, on the challenges facing today's single women Let's Call the Whole Thing Off The author is ending her marriage. By Sandra Tsing Loh The Wifely Duty Marriage used to provide access to sex. By Caitlin Flanagan Sex and the College Girl "This is clearly a mess and not one that is going to clear up with magic speed on the wedding night." By Nora Johnson A Successful Bachelor (June 1898) "More interest should be taken in bachelors.