Pregunta
Which of the following statements correctly describes color blindness?
Red-green color blindness is more common in women.
Color blindness results from the lack of both red and green cones in the retina.
Color blindness occurs because of environmental factors.
Color blindness occurs in lower levels in Colombia, Spain, and Italy as compared to the United States.
Red-green color blindness is more common in women.
Color blindness results from the lack of both red and green cones in the retina.
Color blindness occurs because of environmental factors.
Color blindness occurs in lower levels in Colombia, Spain, and Italy as compared to the United States.
Ask by Grant Rodriquez. in the United States
Mar 30,2025
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None of the statements correctly describe color blindness.
Solución
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Review each option:
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Option 1: "Red-green color blindness is more common in women."Red-green color blindness is an X-linked recessive trait. Since men have one X chromosome, a single defective gene is enough for the condition to occur, whereas women require two defective copies. Thus, red-green color blindness is much more common in men, not women.
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Option 2: "Color blindness results from the lack of both red and green cones in the retina."Color blindness, especially red-green color blindness, typically results from abnormalities or the absence of photopigments in the red or green cones, not the complete absence of both types. A total lack of both would profoundly affect visual perception, which is not the typical presentation of color blindness.
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Option 3: "Color blindness occurs because of environmental factors."The majority of color blindness cases are genetic rather than caused by environmental factors, though certain diseases or damage can affect color vision. However, the congenital form (which is the most common) is inherited.
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Option 4: "Color blindness occurs in lower levels in Colombia, Spain, and Italy as compared to the United States."There is no well-established evidence or consensus in scientific literature that supports a significantly lower occurrence of color blindness in these countries compared to the United States.
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Conclusion:None of the statements provided accurately describe color blindness.
The correct understanding is that red-green color blindness is a genetically inherited condition that is more common in men due to its X-linked recessive inheritance, and it typically results from abnormalities in the photopigments of the red or green cones rather than a complete absence of both.
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Simplifique esta solución Bonus Knowledge
Color blindness, particularly red-green color blindness, is indeed much more common in men than in women, with about 1 in 12 men affected compared to 1 in 200 women. This discrepancy is due to the genetic inheritance pattern of the condition, which is carried on the X chromosome. So, for the majority of cases of red-green color blindness, men bear the brunt!
Interestingly, color blindness primarily arises from inherited genetic factors rather than environmental influences. It usually occurs due to a deficiency in the cones of the retina responsible for detecting red or green light (or both), leading to difficulty distinguishing between these hues. While certain environmental factors can impact vision, they are not the root cause of color blindness itself!
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