{"id":248396,"date":"2025-07-08T10:50:37","date_gmt":"2025-07-08T10:50:37","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=248396"},"modified":"2025-07-08T10:50:39","modified_gmt":"2025-07-08T10:50:39","slug":"red-green-color-blindness-is-inherited-as-an-x-linked-recessive-trait-in-humans","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/08\/red-green-color-blindness-is-inherited-as-an-x-linked-recessive-trait-in-humans\/","title":{"rendered":"Red-Green color blindness is inherited as an X-linked recessive trait in humans."},"content":{"rendered":"\n

Question: Red-Green color blindness is inherited as an X-linked recessive trait in humans. A woman, whose mother had red-green color blindness, marries a colorblind man. What are the chances that their child will be a colorblind female? Answer Here: colorblind female? Answer Here: normal male? Answer Here: Explain why males cannot “carry” the colorblindness recessive allele.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

In this case, we have a woman whose mother had red-green color blindness, and she marries a colorblind man. Red-green color blindness is inherited as an X-linked recessive trait, meaning that the gene responsible for the condition is located on the X chromosome.<\/p>\n\n\n\n

1. Chances of a colorblind female:<\/strong><\/h3>\n\n\n\n
    \n
  • The woman, since her mother was colorblind, must have inherited the colorblind allele from her mother. Therefore, her genotype is X^cX (where X^c represents the X chromosome carrying the colorblind allele).<\/li>\n\n\n\n
  • The man is colorblind, so his genotype is X^cY.<\/li>\n\n\n\n
  • For a child to be a colorblind female<\/strong>, she must inherit a colorblind allele from both parents (i.e., X^cX^c). The woman can pass on either an X^c or a normal X chromosome, and the man can only pass on the X^c chromosome. Thus, there is a 50% chance<\/strong> the daughter will inherit the X^c chromosome from the mother and be colorblind.<\/li>\n<\/ul>\n\n\n\n

    2. Chances of a normal male:<\/strong><\/h3>\n\n\n\n
      \n
    • A normal male<\/strong> requires the inheritance of a normal X chromosome from the mother and a Y chromosome from the father. The woman can pass on either a normal X or an X^c chromosome, and the man can only pass on the Y chromosome.<\/li>\n\n\n\n
    • The chances of having a normal male<\/strong> are 50%<\/strong> since the child can inherit a normal X from the mother and the Y from the father.<\/li>\n<\/ul>\n\n\n\n

      3. Why males cannot carry the colorblindness recessive allele:<\/strong><\/h3>\n\n\n\n
        \n
      • Males have only one X chromosome (XY). Since the colorblindness allele is recessive, if a male inherits the X chromosome with the colorblind allele (X^c), he will express the trait because there is no second X chromosome to potentially carry a normal allele to mask the effect. Therefore, males cannot be carriers of X-linked recessive traits. They either have the condition or they don\u2019t, depending on which X chromosome they inherit.<\/li>\n<\/ul>\n\n\n\n

        To summarize:<\/p>\n\n\n\n

          \n
        • The chances of a colorblind female are 50%<\/strong>.<\/li>\n\n\n\n
        • The chances of a normal male are also 50%<\/strong>.<\/li>\n\n\n\n
        • Males cannot “carry” the colorblindness allele because they only have one X chromosome and will express the trait if they inherit the X^c chromosome.<\/li>\n<\/ul>\n\n\n\n
          \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

          Question: Red-Green color blindness is inherited as an X-linked recessive trait in humans. A woman, whose mother had red-green color blindness, marries a colorblind man. What are the chances that their child will be a colorblind female? Answer Here: colorblind female? Answer Here: normal male? Answer Here: Explain why males cannot “carry” the colorblindness recessive […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-248396","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/248396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=248396"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/248396\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=248396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=248396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=248396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}