Psychology & Psychiatry

The biological origins of sexual orientation and gender identity

Male? Female? The distinction is not always clear. Exploring the scientific evidence for the biological origins of sexual orientation and gender identity must continue to both enhance patient care and fight discrimination.

Health

Intersex surgeries spark move away from drastic treatment

She was born to a young Chicago couple, named Jennifer, and grew into a beautiful long-lashed child with wavy dark hair, big brown eyes and a yearning, youthful desire to be just like all the other girls.

Medical research

Female embryos less likely to survive to birth

New research has challenged the prevailing belief that the higher proportion of male babies born in the general population results from a higher proportion of males being conceived. 

Medical research

Sampling of embryonic DNA after IVF without biopsy

New study published in Reproductive Biomedicine Online shows that fluid-filled cavity in 5-day old human blastocysts may contain DNA from the embryo, allowing diagnosis of genetic disease without a biopsy

Genetics

Selfish gene may undermine genome police

(Medical Xpress)—For a bunch of inanimate chemical compounds, the nucleic and amino acids caught up in the infamous "selfish" segregation distorter (SD) saga have put on quite a soap opera for biologists since the phenomenon ...

Neuroscience

Fragile X makes brain cells talk too much, research shows

The most common inherited form of mental retardation and autism, fragile X syndrome, turns some brain cells into chatterboxes, scientists at Washington University School of Medicine in St. Louis report.

Genetics

An embryo that is neither male nor female

So, is it a girl or a boy? This is the first question parents ask at the birth of an infant. Though the answer is obvious, the mechanism of sex determination is much less so. Researchers at the University of Geneva (UNIGE) ...

page 2 from 4