As climate change leads to increased temperatures on nesting beaches, we can expect a shift in the sex ratio of sea turtle populations, with a predominance of female offspring. This change would not be a result of genetic adaptation or mutation, as the underlying genetic traits for determining sex are fixed. Instead, the altered distribution of sea turtle traits would primarily arise from environmental factors, specifically the rising sand temperatures influencing the sex determination process. Over time, if these trends continue, the population may face challenges with reproductive success and genetic diversity due to the lack of male turtles.
The sex of sea turtle offspring is determined by the temperature of the sand during development. Temperature over 87° Fahrenheit will result in female offspring. Temperatures below 87° Fahrenheit will result in male offspring. Scientists are concerned about the effects of climate change on sea turtle development. One of these effects is the warming of environments. In 2-5 sentences, describe what change you'd expect to see in the distribution of sea turtle traits over time, if any. Explain whether it would be caused by a genetic adaptation, a mutation, or the environment. (4 points)
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