For example, the hereditary hemochromatosis mutation protects carriers from iron-deficiency because the mutated gene allows increased efficiency of iron absorption.
例如，因为突变的基因可以提高铁的吸收效率，所以遗传性血色素沉着病突变可以保护带菌者不缺铁。
2
What is iron-deficiency anemia?
什么是缺铁性贫血？
3
Irondeficiency is characterized by chlorosis between veins in young leaves.