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Prevalence of Red-Green Color Blindness
The prevalence of red-green color blindness, the most common inherited color vision deficiency, varies significantly by gender and ethnic background. It affects approximately 8% of males of White European descent, 5% of Asian males, 4% of African males, and less than 2% of males who are Indigenous American, Australian, or Polynesian. The condition is substantially less common in females, with a prevalence of about 0.4% among women of White European descent.
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Prevalence of Red-Green Color Blindness
A male is diagnosed with red-green color vision deficiency, a condition linked to a gene on the X chromosome. His mother has normal color vision. What is the most likely explanation for how he inherited the condition?
A specific type of inherited color vision deficiency, which makes it difficult to distinguish between red and green, is observed far more frequently in males than in females. Which statement best analyzes the genetic reason for this difference in prevalence?