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What causes colour blind?

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What causes colour blind?

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It’s genetic. Here’s an explanation: Genes are the first and the most important gifts we receive from our parents. One set of chromosomes each from parents make up the genetic information of the progeny and is inherited by all organisms. The basic genetic modes of inheritance is X-linked inheritance. The X-linked genetic modes of inheritance are the traits or genetic disorders seen in the progeny due to the presence of a gene on the X chromosome. There are two X-chromosomes in females and males have one X and one Y chromosome. The genes present on the X are recessive or dominant and the way they are expressed in either of the sexes is different. This is because there are two copies of a gene on the X-chromosome in females and males have only one copy of an X-linked gene, which leads to expression of the trait or disorder. Many women are carriers of the genes but do not express the trait, but unknowingly pass it on to their sons, who may exhibit the trait or disorder. Thus, many women w

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