Search results
Results from the WOW.Com Content Network
Early research into the differences between male and female brains showed that male brains are, on average, larger than female brains. This research was frequently cited to support the assertion that women are less intelligent than men. [83] [84] One of the most influential early researchers on this topic was Paul Broca. In 1861, he examined ...
Most mammals, including humans, have an XY sex-determination system: the Y chromosome carries factors responsible for triggering male development. In the absence of a Y chromosome, the fetus will undergo female development. This is because of the presence of the sex-determining region of the Y chromosome, also known as the SRY gene. [5]
[2] [3] In most species with XY sex determination, an organism must have at least one X chromosome in order to survive. [ 4 ] [ 5 ] The XY system contrasts in several ways with the ZW sex-determination system found in birds , some insects, many reptiles , and various other animals, in which the heterogametic sex is female.
One difference between the glans penis and the glans clitoridis is that the glans clitoridis packs nerve endings into a volume only about one-tenth the size of the glans penis. Therefore, the glans clitoridis has greater variability in cutaneous corpuscular receptor density (1-14 per 100× high-powered field) compared with the glans penis (1-3 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 5 January 2025. Cell division producing haploid gametes For the figure of speech, see Meiosis (figure of speech). For the process whereby cell nuclei divide to produce two copies of themselves, see Mitosis. For excessive constriction of the pupils, see Miosis. For the parasitic infestation, see Myiasis ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
According to certain studies, men on average have one standard deviation higher spatial intelligence quotient than women. [9] This domain is one of the few where clear sex differences in cognition appear. Researchers at the University of Toronto say that differences between men and women on some tasks that require spatial skills are largely ...
Credit - Kevin Dietsch—Getty Images. O n Jan. 3, the U.S. Surgeon General issued a sobering report about the cancer risks linked to something that most Americans enjoy frequently: an alcoholic ...