I thought, really, men and women are TOO different. It's like two
different species! And I thought, what if this really is the case.
What if, sexual reproduction started off with related species mating.
What if the the male Y chromosome came from different species!
I think when John Gray wrote Men Are from Mars, Women Are from Venus
he definitely had some sort of evolutionary perspective in mind.
Because it has been proposed that life was introduced on earth from some other planet.
He was definitely hinting at a very radical difference by saying both
were from different planets.
I had read an article about the bonobo monkeys sharing 98% of
our genotype, and I thought, if 2% is what makes us human....
then the difference between X chromosome and Y chromosome is
too large to account for just the sexual characteristics.
There is something there!
And then, poof! I found this in a Washington Post article:
"When Nick Patterson of MIT and his colleagues at the Broad Institute
compared the genes of humans and chimps, they found that one of the
chromosomes -- the female sex chromosome X -- was 1.2 million years
younger than the others. It appeared the two species shared a common
ancestor who gave them both their X chromosomes, and did so more
recently than the ancestors who gave them all the other chromosomes."
Human Ancestors May Have Interbred With Chimpanzees
Direct Observations yield vital insights
Gregor Mendel arrived at the mechanism of heredity (genetics) with indirect observation and his experiments with plant hybridization.
Clearly, John Gray also arrived at a profound evolutionary truth from
directly observing his marriage and accepting the difficulties that
other couples were also facing in their marriage.
[Gray's teachings, From Wikipedia:
Gray's books teach that men and women are intrinsically different in their biology and psychology. He writes that harmony between the sexes is achieved by recognizing and accepting these differences rather than trying to erase them.
His books have sold over 40 million copies world-wide.]
While John Gray didn't venture into species evolution but I really think,
the title is deeper than we imagined.
Here's the Washington Post article, with claims that the male Y chromosome and the female X chromosome came from two different species, roughly 1.2 million years apart:
Human Ancestors May Have Interbred With Chimpanzees
John Gray's book:
Men Are from Mars, Women Are from Venus