Thank you this is the best and easiest to understand that I’ve heard yet
Sent from my iPhone > On Jul 2, 2019, at 8:30 AM, MaryAnn Santos <[email protected]> wrote: > > Thank you for this explanation. It is very helpful. > > Best, > MaryAnn > >> On Tue, Jul 2, 2019 at 5:35 AM Tomas Leal <[email protected]> wrote: >> The XX configuration is tricky, which many either forget or do not realize. >> The Y-gene is so easy to follow because it always comes directly from father >> to son, father to son, at so on. My Y-gene is the exact same one my several >> times great-grandfather had (unless some genetic mutation occurred in >> between). >> >> With a female child, each parent contributes an X gene. Which grandmother >> that particular X gene came from is another matter. >> >> The X gene passed father to daughter had to come from the father's mother; >> however, she had an X gene from each parent, so the X gene the father passed >> on could have come either from his mother's mother or his mother's father. >> In turn, that X gene could have come from different grandmothers. >> >> What this means is full sisters can have different X genes via their mother, >> as the one from their mother passed could have come from any one of three >> grandmothers (either of two passed from the mother's parents or one passed >> by the father)! Add in great-grandmothers and it's even more complicated. >> >> In the case presented here, the fathers were different so the X gene each >> one passed could be from a different grandmother as well. Thus, we can see >> the importance of "triangulation" of getting DNA samples from first cousins >> for comparisons, in addition to that from siblings. >> >> Tomás Leal >> -- >> You received this message because you are subscribed to the Google Groups >> "Azores Genealogy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> Visit this group at https://groups.google.com/group/azores. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/azores/b90e1385-18d7-41b1-9ebb-799e6e5311fa%40googlegroups.com. > > > -- > MaryAnn Santos > Senior Advisement and Student Affairs Administrator > Department of Art and Art Professions > NYU/Steinhardt > 212.998.5702 > [email protected] > > Follow us at > Twitter / @NYUart > Instagram / @nyuart > Facebook / NYU Art Department > -- > You received this message because you are subscribed to the Google Groups > "Azores Genealogy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > Visit this group at https://groups.google.com/group/azores. > To view this discussion on the web visit > https://groups.google.com/d/msgid/azores/CAGLQU9Yw55%3Dxi50%2Bq7iqB_TTGp5M2LUgcZg%2BSP6d4AAjuN%2BoXA%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Azores Genealogy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/azores. To view this discussion on the web visit https://groups.google.com/d/msgid/azores/F153ADDD-BA99-4BC4-9E5D-31285A5913B1%40gmail.com.
