Can someone tell me some y-linked traits?

y-linked traits could be carried by females but only males develop it (there are also exceptional females who could develop it). hairy ears is a y-linked trait. can anyone give me more y-linked traits and explain them?





thanks in advance

Can someone tell me some y-linked traits?
the three most known are baldness, hairy ears, and color blindness. you will probably never meet a bald color blind woman with hairy ears :)


that would be super rare!


its b/c theyre recessive. the female will get the trait from her father but she wont exhibit it, she'll only be a carrier. she will however, most likely pass it on to her son, who will then exhibit the trait.


say that aa exhibits the trait and AA is clean, while Aa is a carrier, in this case only women can be carriers.


so assume that a grandfather was bald. he would then have the chromosomes: XaY[nothing] b/c this specific trait can only be carried on the X chromosome. his daughter then was XAXa, so the dominant allele prevailed, so she was only a carrier, but she happened to have son, and not knowing the father's genotype, after completing the [2] Punnet square[s], we are able to determine that there is a 50% chance that the SON will have the XaY genotype, thus being bald. [assuming of course, that we know its a son, then 50% in each Punnet square]. if we dont know its a boy, then 50% chance of a bald son altogether, leaving 25% in each Punnet square [depending on the father's genotype, XaY or XAY].





punnet squares:


for XAXa and XAY [mother carrier, father clean]:





__ |XA__ | Y


XA|XAXA|XAY


Xa|XAXa |XaY %26lt;=yup, this one's bald!





%26amp;%26amp;





for XAXa and XaY [mother carrier, father bald]:





__ |Xa__ | Y


XA|XAXa|XAY


Xa|XaXa |XaY %26lt;=yup, this one's bald too!





actually, now that i think of it, the father's genotype really doesn't matter when you're talking about a son [with a Y chromosome] if we were talking daughters, then yeah, but otherwise... hm. i only just thought of that. lmao. :)





hope i helped!!


:)
Reply:well, no 1 actually understood my question except sdc_99(he understood a bit but his answer was nothing different than my explanation). anyways, good try ppl!!!! Report It

Reply:Wow, 1 week ago
Reply:Male pattern baldness--there are not many y-linked traits. Most are on the X.
Reply:The only one I'm aware of is the hairly earlobe thing, but females do not carry Y-linked traits because females have no Y chromosome.





You may be confusing them with x-linked traits (such as haemophilia) with occur more frequently in males because they are on the X-chromosome and are recessive in females only.
Reply:Males carry the x chroma which is the major decision maker in a lot of the baby's development, hair color and eyes to the deciding factor in the baby's sex.It's the way it is, but is also the luck of the draw.
Reply:Male pattern baldness is the most well known of these. Mother's father bald? More than likely you will also be bald if male. There is a female baldness known as alopecia, but quite rare and not linked to mpb.
Reply:Hemophilia is a good example (both men and women can be affected with the disease but men are at higher risk of getting it)





The dominant allele of the gene H allows blood to clot normally but the recessive allele h causes hemophilia ( a disease which makes it difficult for the blood to clot normally it is only carried on the X chromosome)


Women have three genotypes of the disease


HH - Normal


Hh - Carrier


hh - Hemophiliac.


(all of which are carried on their two X chromosomes)


where as men only have two


H - Normal


h - Hemophiliac


(Which are only carried on the one X chromosome)


This disease is inherited based on a person's gender.





I hope this helps
Reply:colour blindness, as it is passed from grandfather to his daughter, then the daughter passes it to her children. it is a recessive disorder though, so females usually will not get the disorder unless her father carries the same allele on his X chromosome.