Does eye color effect your peripheral vision?

Color blind man produces female offspring with one normal vision eye and one colorblind eye, explain the cause

  • 1.Red-green color blindness in humans is due to an X-linked recessive gene. A woman whose father is color blind possesses on eye color with normal color vision and one eye with color blindness. a.Propose an explanation for this woman’s vision pattern b. Would it be possible for a man to have one eye with normal color vision and one eye with color blindness?

  • Answer:

    The gene for color blindness is carried on the X chromosome. women all have two chromosomes, but it's known that in female cells, at one point during development, one of those chromosomes scrunches up into what's called a Barr body. So presumably, the eye that has color vision descended from cells in which the X chromosome with the bad allele was balled up into a Barr body, so only the working version is transcribed and translated. The cells in the color blind eye must descend from cells in which the X chromosome carrying the good allele got turned into the Barr body, and this means that since it's all scrunched up, the DNA can't be used to make working receptor, leading to color blindness. Men only have one X chromosome, so they can't possibly show two different alleles for any gene on the X chromosome. Since you have to be transcribing genes off your X chromosome to develop and live properly, the single X chromosome never gets turned into a Barr body. In those rare people with extra sex chromosomes, if they have XXY or XXX, all but one of their X chromosomes gets turned into a Barr body. This is the reason why having an extra X chromosome is not nearly so bad for you as having an extra autosome. Down's syndrome is the most common triploidy, and the mildest. The others vary from being very bad and nearly always leathal to just always lethal. But gene dosage is controlled by the formation of Barr bodies when it comes to the X chromosome, so the phenotype for having extras is pretty mild.

bebeto at Yahoo! Answers Visit the source

Was this solution helpful to you?

Other answers

This is impossible either a person in colorblind or they are normal, they cannot have one eye colorblind and one normal

virgodoll

@ Dr. Sexpert: Men have one X and one Y chromosome. The sperm has one of these. As the offspring is female the sperm contributed an X, as did the mother's egg. The colour blindness could have been inherited from either parent. I did not know this phenomenon was possible. I thought both eyes developed following the same genetic code. A) My facetious explaination is that she did not inherit colour blindness. However, she lost an eye to an infection. She was given an eye transplant (functional or cosmetic) and her father was the doner. B) Yes, by the same logic as (A).

Michael E

That is so weird, I was just reading about this topic in a fact book. But if the gene is passed only from a female how did she get it in the first place?

Dr. Education

Refer to RUSSEL author's book of GENETICS. $_UK_HI $

sukhdeep

Just Added Q & A:

Find solution

For every problem there is a solution! Proved by Solucija.

  • Got an issue and looking for advice?

  • Ask Solucija to search every corner of the Web for help.

  • Get workable solutions and helpful tips in a moment.

Just ask Solucija about an issue you face and immediately get a list of ready solutions, answers and tips from other Internet users. We always provide the most suitable and complete answer to your question at the top, along with a few good alternatives below.