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You mean you can have a penis without Y DNA?!!!@oriental Proof to your statement? Maciamo himself discussed that Y-hg's may have more phenotypical effect on a man than previously thought. Whether it is in fertility, hairiness or even voices( pitches). In fact studies have found that there are other genes for the formation of a penis other than the Y. So to state that Y-DNA just gives you a penis is faulty.
@Le Brok Yes and this is the reason why there are cases of SRY-negative XX males! You can google it on the net.
Molecular studies have detected Y chromosome material in 75% of XX males (
It is possible that in remaining 25% Y chromosome exists but not in all organs. The DNA is always sampled from blood and not from testis for example, where Y chromosome, or part of it, might be still present. There are few reported cases of so called chimeras, people with two different DNA in different organs.Muller et al., 1987), which explains their testicular development. On the other hand, many theories have been put forward to explain how patients who are Y-negative, as in this case, can have testes, despite complete absence of the Y
http://humrep.oxfordjournals.org/content/16/4/717.full
Yes, autosomal DNA contains most of male "blueprint", however yDNA is the "director of the construction".In fact studies have found that there are other genes for the formation of a penis other than the Y. So to state that Y-DNA just gives you a penis is faulty.
@motzart I noticed the correlation between tall height and haplogroup I* before as well. As for hairiness and baldness, I also expect I*, G* and J* carriers to be the most predisposed to both traits. With E1b1b*(and YAP lineages in general) coming second and being intermediate between IJ*/G*/H* and K* descended lineages(NO*/P*/Q*/R*) in that respect. What do you think?
If they really did then yes we would expect them to show the same traits relatively/proportionally speaking.
As far as I know there are no physical characteristics caused by the Y-Chromosome, except of course for the general male characteristics. But to be more precise they are not caused by the Y-DNA itself, but by the missing second X-Chromosome which otherwise oppresses these features. Unless of course you associate Y haplogroups with certain ethnicities, so that you can say with a certain chance someone with haplogroup A is black, O suffers from lactose intolerance, I is white etc...
Marked differences in Y-SNP allele frequencies between continental populations can be used to predict the biogeographic origin of a man's ancestral paternal lineage. Using 627 samples collected from individuals within the UK with pale-skinned Caucasian, dark-skinned Caucasian, African/Caribbean, South Asian, East Asian or Middle Eastern appearance we demonstrate that an individual's Y-SNP haplogroup is also strongly correlated with their physical appearance. Furthermore, experimental evaluation of the Marligen Signet Y-SNP kit in conjunction with the Luminex 100 detection instrument indicates that reliable and reproducible haplogrouping results can be obtained from 1 ng or more of target template derived from a variety of forensic evidence types including, blood, saliva and post-coital vaginal swabs. The test proved highly male-specific with reliable results being generated in the presence of a 1000-fold excess of female DNA, and no anomalous results were observed during degradation studies despite a gradual loss of typable loci. Hence, Y-SNP haplogrouping has considerable potential forensic utility in predicting likely ethnic appearance.
LOL I wish that were true. We do usually have very strong masculine features, like tallness and big noses, I know that for sure. But the women of ancient Europe clearly didn't find us more attractive when they mated with Central Asian R-carrying invaders.Those, like you and I, who have I haplogroup Ydna tend to be much better looking..
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