Class Notes (839,092)
Canada (511,185)
Brock University (12,137)
Biology (1,633)
BIOL 1F25 (223)
Lecture 19

Lecture 19

2 Pages
60 Views

Department
Biology
Course Code
BIOL 1F25
Professor
Daniel Glenday

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Description
Outline of Lecture 19 Sex Determination and DifferentiationIEmbryologic origin of the reproductive systemth At 4 week intermediate mesoderm gives rise to mesonephros the mesonephric Wolffian ducts give rise to epididymis and vas deferens in maleth At 6 week intermediate mesoderm give rise to paramesonephric Mllerian ducts which give rise to oviducts and uterus in female Hox genes are involved in AP patterning of urogenital tract Primordial germ cells Arise in primitive streak and endoderm migrate to yolk sac then back to genital ridge Migration requires Steel factor In females number of germ cells spikes the quickly falls in fetus and experiences steady decline throughout life in males number of germ cells are constantly renewed Can be used as a source of embryonic stem cells Fate of PGC male G arrest female prophase I arrest in embryo is determined 1by environment but postnatal fate depends on genetic makeupIIControl of sexual development gonadal sexphenotypic sexA It is a sequential process genetic sex B
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit