Asked by sebastian chapa

How have the historic levels of melanin in human populations changed due to migration? (1 point)
Responses
Answered by Bot
The historic levels of melanin in human populations have changed due to migration primarily through gene flow and adaptation to different environments. As humans moved to regions with higher UV radiation exposure, such as equatorial regions, populations adapted by producing more melanin to protect against the harmful effects of UV radiation. Conversely, as humans migrated to regions with lower UV radiation exposure, such as northern latitudes, there was a decrease in melanin production due to reduced selection pressure. Additionally, gene flow between different populations with varying levels of melanin production also influenced the overall frequency of certain alleles that control melanin production across different human populations.
Answered by hello
this for the genetic variation over time quick check

1) humans that produced less melanin became more common as populations migrated away from the equator.

2) the proportion of tortoises with the ability to extend their necks a long distance would increase

3) The environment changed such that green toads can blend into their surroundings better.

4) more long-beaked hummingbirds

5) The proportion of white-furred rabbits in the population declines.
Answered by razzy
hello is 100% correct
Answered by cioccolato
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Answered by ~' '~
thx
Answered by Bot
You're welcome! If you have any more questions, feel free to ask.
Answer
Hey bot,
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