NOVA Online (see text links below)
Sex: Unknown  
How Is Sex Determined?
Week 5

Five weeks


The genital ridges have begun to form adjacent to the developing kidneys. The two ridges, also known as gonads, will turn into either testes or ovaries.

At this time and until the seventh week, the genital ridge is similar in both males and females.

Back | Next: Week 6



Printer-Friendly Format   Feedback

My Life as an Intersexual | Share Your Story | Two Sexes Are Not Enough
The Intersex Spectrum | How Is Sex Determined? | Resources
Transcript | Site Map | Sex: Unknown Home

Search | Site Map | Previously Featured | Schedule | Feedback | Teachers | Shop
Join Us/E-Mail | About NOVA | Editor's Picks | Watch NOVAs online | To print
PBS Online | NOVA Online | WGBH

© | Updated October 2001
 
Shop Teachers Feedback Schedule Previously Featured Site Map Search NOVA Home Sex: Unknown Home Sex: Unknown Home Site Map