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Home Q & A Board Biology-Related Homework Help Cell Biology
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SNELMENDORF SNELMENDORF
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11 years ago
Why might dominant traits might not necessarily be the traits that show up the most frequently? Please explain?
Can it be longer and maybe more explanatory?
Whoa thanks, I posted a little late.
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wrote...
#1
11 years ago
It could happen that a dominant trait would lead to decreased survival.  This could be by natural selection or artificial means.
If brown eyes are dominant, but brown eyed babies are destroyed (Nazi Germany for example).
wrote...
#2
11 years ago
Because they might be fatal in many circumstances. Haemoglobin S, which causes sickle cell anaemia is a dominant trait, but causes serious illness in its homozygous form.
Some dominant traits may expose the carriers of that trait to be less viable to reproduction, so less of them will survive to reproduce. Look up peppered moth and industrial melanism as an example.
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