Sign up here to get it delivered to your inbox. As the novel coronavirus sweeps the world, sickening hundreds of thousands of people and killing at least 50, individuals to date , scientists have learned more and more about it. We know that older adults — aged 60 and above — are at greater risk of dying from it. And, based on data from China, Italy and South Korea, we also know that men seem to have higher fatality rates. But in the U. How many women are infected versus men?
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The secret to a long life? Matching sex chromosomes | Science | AAAS
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The secret to a long life? Matching sex chromosomes
To support our nonprofit science journalism, please make a tax-deductible gift today. Sex chromosomes influence physical differences between male and female animals, such as feather patterns in mandarin ducks. In most animals, sex chromosomes help determine whether an individual develops as a male or female. Sexes of some animals, such as most male arachnids, lack a second sex chromosome entirely.
For about 25 years, neonatal assignment to female sex has been advocated for affected males to overcome the issue of phallic inadequacy, but data on outcome remain sparse. Fourteen underwent neonatal assignment to female sex socially, legally, and surgically; the parents of the remaining two refused to do so. Detailed questionnaires extensively evaluated the development of sexual role and identity, as defined by the subjects' persistent declarations of their sex.