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Human sperm carry a hidden source of genetic diversity
1+ week, 6+ day ago (703+ words) Genetic recombination in sperm can begin earlier than expected, revealing a previously overlooked source of human genetic diversity. Every child inherits a genome that’s uniquely their own, shuffled together from both parents through a process called recombination. Scientists have generally…...
Boat noise makes humpback whale songs up to 45 percent less likely to be detected
1+ week, 6+ day ago (896+ words) Boat noise makes humpback whale songs up to 45% less likely to be detected off Panama. Boat engines are changing what underwater microphones can hear along Panama’s Pacific coast. Early results from a yearlong monitoring project show that the presence of…...
Dolphins hunt with sound, but their prey may be listening back
2+ week, 6+ day ago (845+ words) Underwater recordings reveal how dolphins use different sounds to socialize and hunt, while their fish prey may be listening for danger too. Dolphins live inside a world of sound. Whistles carry the social chatter, while bursts of rapid clicks work…...