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Powering the complexity of life with Michael Levin and Nick Lane | Reason with Science | Biology | Evolution
Reason with Science
The Relationship Between Sex and Growth Rates
Ursula Mitvok worked on sex determination for a long time at UCL. She linked it to growth rates, because there's all these different types of chromosomal sex determination and you know, X and Y chromosomes are only a part of it. And effectively what the Y chromosome is doing is activating some growth factors that say, you know, go ahead and grow quickly. So this earliest distinction between a male embryo developing a female is just size. Males grow faster early on, not necessarily throughout the entire development, but grow faster earlier. Trucomaphrodites have an ovary on one side and a test is on the other side. Measurable differences in growth rates between
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