To The Daily Sun,
"So maybe the true answer is that a person's sex is assigned at conception by god." Predestination? Interesting hypothesis by Norman J. Silber that god might determine the sexuality of males with XY sex chromosomes (heterogametic) and females with XX sex chromosomes (homogametic)- same as all primates.
Could it be so simple! If so, god has made exceptions: for females, the Triple X or Super-female (XXX 46) occurs in 1 out of a 1,000 births; the Turner Syndrome (single X or XO 45) occurs in 1 out of 3,500 births; and XXYY 48 (a female with 2 Y chromosomes) occurs in 1 out of 18,000 births. For males, the Kinefelter Syndrome (XXY 47) occurs in 1 out of 750 births; the Super-male (XYY 47) occurs in 1 out of a 1,000 births; and the de la Chapelle Syndrome or XX Male Syndrome (XX 46 SRY) occurs in 1 out of 25,000 births.
Actually, the type of sex chromosomes is not the sole determinant! The SRY gene is on the Y chromosome and induces the sexuality of the fetus at 6-8 weeks of gestation. If the gene is missing or dysfunctional, the male fetus fails to develop testes and consequently develops ovaries(male with ovaries); while if for some reason(translocation), it is on one of the X chromosomes of a female fetus, that fetus would not develop ovaries, but rather testes(female with testes). Hence they would not be the sex that they were "assigned" at birth!
There are other situations, but this overview should present a picture. Could god miss an assignment? Further nonclinical information on transgender metathesiophobia can be gleaned from the 2017 January issue of National Geographic, which was devoted to the "Gender Revolution." A better appreciation of differences fosters a better respect of diversity!
Oh, yeah, male birds are ZZ (homogametic), while females are ZW (heterogametic) – a reverse assignment. And the sex of turtles is determined by TSD (temperature sex determination) – males hatch from cooler nests. Could be a problem for male turtles in the future. Apparently sex "assignment" is not all that simple!
Frank M. Weeks
Gilmanton Iron Works
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