Question

Which family members have red-green color blindness?

Answer 1

Red-green colorblindness is a sex-linked recessive trait with higher prevalence in males. A female is colorblind only if she inherits two recessive alleles. Types of red-green color deficiencies include Deutan and Protan.

Step-by-step explanation:

Red-green colorblindness is a sex-linked recessive trait, most commonly found in males due to their XY chromosome makeup. Females, with their XX chromosomes, are less likely to be colorblind because they would need two copies of the recessive allele, one from each parent. Approximately 8% of males with European Caucasian descent and about 0.4% of females from the same descent are affected by red-green color deficiency.

According to inheritance patterns, a mother can pass the recessive allele for colorblindness to her son, who has a 50% chance of being colorblind if the mother is a carrier and the father has normal vision. Conversely, an unaffected daughter could become a carrier. For a female to be colorblind, she must inherit the recessive allele from both parents, making the condition rarer in females.

Different types of red-green color deficiencies include Deutan and Protan. Disorders like hemophilia A and G6PD enzyme deficiency are also sex-linked, highlighting the complexity of X-linked inheritance.

Answer 2

Red-green color blindness means that a person cannot distinguish shades of red and green (usually blue-green), but their ability to see is normal. There are no serious complications; however, those affected may not be considered for certain occupations involving transportation or the Armed Forces where color recognition is required. Males are affected more often than females, because the gene is located on the X chromosome.