You might like this
learn.genetics.utah.edu/content/begin/cells/scale/
(slide the scale thing along to see the sperm)
Please or to access all these features
Please
or
to access all these features
When's the best time to get pregnant? Use our interactive ovulation calculator to work out when you're most fertile and most likely to conceive.
Conception
Look how small sperm is!!
2 replies
yellowflowers · 11/11/2009 14:43
OP posts:
Please create an account
To comment on this thread you need to create a Mumsnet account.