Frank and maria both had normal vision. after they married, they had two daughters and a son. both daughters had normal vision and never had children. marco, the son, was color blind. he married lauren, who had normal vision. marco and lauren had two children, caleb and molly. caleb was not color blind, but molly was. color blindness is a sex-linked trait (carried on the x chromosome). the diagram below shows the family tree. which statement about this family’s pedigree is correct? marco carried the gene for color blindness, but lauren did not. lauren carried the gene for color blindness, but marco did not. marco and lauren both carried genes for color blindness. frank and caleb both carried genes for color blindness.
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