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Q. I heard about your new Gender Chromosome Patterns illustration. I can’t find a copy of it and which patterns are for “straight” versus “non-straight” brains?

A. Here is a copy of the PowerPoint® slide that no doubt is a work in progress based on emerging research. Notice that currently there are more options for variations for chromosome patterns that involve a “Y” chromosome.

Notice the two patterns that are marked with an asterisk. This indicates that the SRY gene that triggers testis development is damaged, which can lead to an XY-F (there is a XY combination but the individual appears externally as a female) or that it is copied into the X chromosome, which can lead to an XX-M (the individual appears externally as a male but initial screening only shows a XX combination).

As to your last question, this illustrates that people are first and foremost human beings who appear to have chromosomal patterns involving either only X chromosomes or a combination of X and Y chromosomes. As far as is known, none of these patterns differentiate between “straight” and “non-straight” brains.

Here are a few caveats: