what is a sex-linked disorder?

Question

for my biology class

Answer 1

Well, I guess if you had constant reoccurring blisters on the palms of your hands, and you got these blisters from frequently pulling your wang, then I guess this would be called a sex linked disorder! Ha!

Answer 2

A sex-linked disorder is a genetic disorder affecting genes on the sex chromosomes X or Y. The X chromosome has many more genes on it than Y chromosomes so X-linked genetic disorders are more common than Y-linked.

The majority of X-linked disorders are found in men. This is because men have one X and one Y chromosome and therefore have only one chance of getting a "good" copy of the gene. For example, if a certain protein is necessary for proper function a girl may receive one faulty copy of the gene but still have enough of the protein from the gene on the other X chromosome. If a male receives the faulty copy he does not have another X chromosome with a good copy of the gene. Color blindness and hemophilia are two examples of sex-linked genetic disorders.

Answer 3

Basically its a condition that is carried on a sex chromosome (X or Y). Mainly is carried on the X (as a Y is basically an X with a section broken off) and will affect more males than females eg haemophilia, red/green colourblindness, Duchennes muscular dystrophy

Why? Well often these traits are recessive. Normally you requited 2 copies of a recessive gene to see it, but because the corrosponding gene is not present at all in the Y (and hence males) they will express the trait even with 1 allele (version).
A female will need 2 copies of it (1 from each parent, so if its a rare condition , the chances of it being seen in 2 people is not high). Females will be carriers for the condition and will pass it to male offspring. Males cannot pass these conditions to any males (as they pass the Y which does not carry the trait)
genoptypes and phenotypes (A is superscript and attached to X to show its linked to it)
eg. XAXA , normal female
XAXa - carrier female (not affected)
XaXa - affected female
XAY - normal male
XaY affected male

You will often see these traits in a family tree (pedigree tree) skip generations (as its carried in females usually) , more males are affected eg haemohphila in Brisitsh royal family.

Answer 4

A Pedophile, transsexual, transvestite, cross dresser, bi-sexual, rapist, and homosexual, are diagnosed as a mental disorder. The real reason they occur is : DNA codes that create a MALFUNCTION IN THE PITUITARY GLAND. It makes a shortage, or overabundance of hormones that are the OPPOSITE of the "Predominant Physical Body (PPB). It's a Birth Identity Gender (B.I.G.) Disorder.
In that case it should be diagnosed a "hormonal disorder," that may be corrected by giving the patient the correct amount, and kind of hormones that MATCH" the "predominant physical body" so they can become the person they were born as, instead of cutting up the body with surgery to try to fix a condition for a patient that scientists diagnosed a mental disorder.
Obviously, if it's a mental disorder, they aren't able to make a sane decision about it. Do some Independent Research on becalmd.com, neurogenesis.com, and get a book called "All you ever wanted to know about Sex Change Surgery and were Afraid to Ask, or request my article called,"Violence and Anxiety, What's the Connection?" by D.R. Stewart Roth, I. R. You're wlecome.

Answer 5

Most sex-linked disorders affect males. Females tend to be carriers of these disorders and can pass the faulty genes which cause them onto their children.

Haemophilia and colour blindness are good examples.

It's a bit complicated to explain but here goes:

The faulty gene could be on an x chromosome. A female could inherit one faulty x and one normal x - she wouldn't be affected by the disorder because her normal x would counter the effects of the gene, but she could pass the faulty x onto her children. A male who inherited the faulty x would have the disorder because the gene that counters the effects is only found on the part of the x that the y doesn't have.

The faulty gene could be on the y chromosome, therefore no females will be affected because they don't have them, but males would.

Does that help? I've looked on the web to see if there's a simplified explanation but couldn't find one, sorry.

Answer 6

Usually this term refers to mutation in a gene that maps on the X chromosome. Females have 2 copies of the X chromosome but only one, chosen at random, is active in a particular cell. The other is inactive, visible as the Barr body. Thus, if one X chromosome has a mutation in a particular gene, if the other one does not, it can make up the deficiency as it will be expressed in some cells. Males have only one X chromosome plus a Y chromosome not found in females. If a male X chromosome has a mutation, there is no other copy to make up the deficiency. The Y chromosome has very few genes, but presumably those that map there can give rise to sex-linked mutations in males.

Answer 7

A sex link disorder...well am not sure what your question is but a sex link defects would be color blindness which are in males.....There are a bunch other genetical defects that goes with the XY chromosomes due to the fact that the Y chromosome is weaker because it does not have enough space to fill in more genetic material, thus the broken X..If that's not what you mean then am sorry for not being more helpful

Answer 8

you now that human have 2 sexual chromosomes X and Y
Women have two X , men 1X 1Y

There are disease which are recessive meaning they manifest only when the two chromosomes have the marker.

Color blindness is a defect on chromosome X . For women ,this disease is rarely seen since it is likely impossible to have both chromosome X defections. But in men in7% of cases , you have a defect called daltonism affecting the chromosomeX . It is the same for hemophilia a blood disease hindering coagulation of blood

Answer 9

Any disorder that is specific to a sex... as in only males get it or only females get it. Certain disorders can be "carried" by females but only "affect" males. Certain diseases can be "carried by males, but only affect females. That would be a Sex-linked disorder.

Answer 10

i recognize colour-blindness is suitable to the y- chromosome (in straightforward words men have it) sorry im no extra of a help.. in basic terms seem up y-chromosome appropriate themes or x-chromosome appropriate themes... it might pull up some stuff for you! extra famous in men because in women human beings they have 2 X-chromosomes so there's a more beneficial threat of them cancelling each and each others undesirable features out the position the boys have 2 different chromosomes.