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Alleles on the X chromosome as well as chromosome 7 can affect the quality of color vision to varying degrees. This information is based on very limited research of color deficiency sites on line.
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∙ 9y ago
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The human gene associated with color vision are located on the what chromosome?
X
WHO concluded that the gene for eye color is located on the sex chromosome?
mendel
What would most likely stop mendel from finding a pattern in his results?
if seed color and shape were located on the same chromosome
Why can only females be carriers of sex-linked genetics disorders?
This is not an entirely accurate statement, but it is generally true. It happens because sex-linked genes are located on the X chromosome only. Males have only one X chromosome (XY) and the corresponding Y chromosome from their fathers do not have genes for sex-linked traits, including color vision and proper blood clotting. If a mother has normal color vision but carries a gene for color blindness on her other X chromosome, her genotype is Cc. If she has a daughter and that daughter inherits her mother's recessive gene, it is usually balanced by her father's X chromosome if he has normal color vision, and the daughter would be Cc like her mother. However, although they are rare, a colorblind female is possible if her mother is a carrier (or is color blind, cc) and her father is colorblind also. However, a son only inherits one X chromosome, so he is totally dependent on which X chromosome his mother gives him. His father's Y chromosome, which makes him male, does not have this gene on it. The son has a 50-50 chance of inheriting his mother's color blind gene, and if he does, he will be colorblind based on the gene inherited from his female parent. His male parent donated a Y chromosome, which has no genes for this trait on it, so the mother alone determines this trait in her sons.
Why do color blindness occur more often in males?
It is rare in females because they have 2 X chromosomes so they have the trait that stops colorblindness, but men have an X and Y chromosome so the Y chromosome does not back up the other X chromosome and makes men have more of a chance to get colorblindness that doesn't mean girls cant get it, just means girls have a better chance to stop it.
What gene for red green color blindness is located on the X-chromosome it is normally not possibly for a?
female.
What unusual result suggested that the eye-color trait is located on the X chromosome?
The correlation between the trait of the white eye color and the male sex of the affected F2 flies; there were no corresponding allele present on the Y chromosome.
What is the probability that a woman who is a carrier of the colorblind gene and a color blind man will have a first son who will be color blind?
The probability is 0 (but the daughter will be a carrier of the color blind gene). This is because the gene dictating whether someone is color blind or not is linked to the X chromosome (and not the Y). The color blind gene is a recessive gene whilst the normal color vision gene is a dominant gene. Hence if a girl (XX) has one normal vision gene (from one parent) and one color blind gene (from the other parent), her normal vision gene will be dominant to the recessive color blind gene and hence she will have normal vision (but she will be a carrier of the color blind gene). If both her parents contribute the recessive color blind gene to her, then she will be color blind. For a woman (XX) to be color blind, she needs to be have both genes to be recessive (ie where there is no dominant normal color vision gene to dominate). For a man (XY), as long as the X gene contributed by his mother is a color blind gene, he will be color blind because he has no other X chromosome where a dominant normal color gene could reside. Hence, to answer the question, a man with normal color vision (XY, with a dominant normal color vision X gene since the gene can't be the recessive color blind gene otherwise he will be colorblind) and a colorblind woman (XX, both recessive color blind genes), will each contribute an X each the child. The man will contribute his only X chromosome which carries the normal color vision X gene and the woman can only contribute a recessive color blind gene. The man's normal color vision X gene will be dominant, and hence the daughter will definitely have normal vision (despite being a carrier).
What most likely stopped Mendel from finding a pattern in his result?
if seed color and shape were located on the same chromosome
What is the location of the eye color of a fruit fly meaning which chromosome?
The locus for eye color is on the X chromosome.
What gene causes color blindness?
i don't know... is there a genetic connection??? Im wondering the same thing. Is there a genetic connection? I concluded that there is not an genetic connection, that dark hair has dark eyes for example. But i do however thing that there is a environmental connection. Both hair and eye color is effected but the environment (sunny, not sunny)
What would most likely stopped Mendel from finding a pattern is his results?
if seed color and shape were located on the same chromosome
