Class Notes (836,147)
Canada (509,656)
Brock University (12,091)
Biology (1,629)
BIOL 1F25 (223)
Lecture

Principles of Development

2 Pages
34 Views
Unlock Document

Department
Biology
Course
BIOL 1F25
Professor
Daniel Glenday
Semester
Fall

Description
Principles of Development Spemann grafting experiments - developmental fate influenced by signals from neighboring cells "embryonic induction" embryonic induction INDUCTION interaction between an inducing tissue that causes a responding tissue to undergo a change in its direction of differentiation ex/ vegetal cells induce mesoderm mesoderm induces neural tissue (Spemann observed) optic lobe induces optic lens competence = ability of responding tissue to respond to inducing signal competence 2 types of induction: - INSTRUCTIVE induction: inducing signal instructs one path over instructive induction another ex/ ectoderm --> epidermis (no signal) --> muscle (vegetal cells) ---> nerve (mesoderm) - PERMISSIVE induction: responding tissue responds to signal non- permissive induction specifically (any inductive signal will do) **instructive inductions occur earlier during development permissive induction later during development (options narrowed)** Principles of Development MESODERM INDUCTION Xenopus: ectoderm --> epidermis (if cultured alone) ectoderm --> mesoderm (if cu
More Less

Related notes for BIOL 1F25

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