Class Notes (905,091)
CA (538,354)
UTSC (32,636)
BIOC51H3 (51)
Lecture

BGYB51H3 Lecture 23 Notes Nov 26

1 Page
105 Views

Department
Biological Sciences
Course Code
BIOC51H3
Professor
Maydianne Andrade

This preview shows half of the first page. Sign up to view the full page of the document.
BGYB51H3 Lecture 23 Notes
-evolutionary hypothesis of aging says that aging is caused by failure organisms to completely
repair cell and tissue damage
-there is weak selection against mutations on older organisms
-positive early effect on reproduction is favoured by natural selection and usually outweighs
negative effects
-mutation accumulation hypothesis and repair-reproduction trade off hypothesis are part of
the evolutionary hypothesis of aging
-mutations that decrease the ability of organism to maintain body in good repair are evident as
the organism ages
-uµZ}v[((o](]u}µ]ÀµZuµZ](}µ]}v}µ
early in life
-mutations may be maintained through mutation-selection balance if selection is weak during
late years
-deleterious mutations early in life are eliminated
-repair-reproduction hypothesis is the antagonistic pleiotropic hypothesis
-mutations that increase lifespan lead to decreased early reproduction (vice versa)
-reproducing early comes with the cost of less offspring compared to late reproduction
-early reproduction causes increased senescence when adding eggs to the nest
-ecological mortality is mortality caused by extrinsic factors
-senescence is changes in function caused by intrinsic factors
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
BGYB51H3 Lecture 23 Notes -evolutionary hypothesis of aging says that aging is caused by failure organisms to completely repair cell and tissue damage -there is weak selection against mutations on older organisms -positive early effect on reproduction is favoured by natural selection and usually outweighs negative effects -mutation accumulation hypothesis and repair-reproduction trade off hypothesis are part of the evolutionary hypothesis of aging -mutations that decrease the ability of organism to maintain body in good repair are evident as the organism ages -KZ}ZL[ o]]K} ]Z ZZZK Z]} ]}L} Z early in life -muta
More Less
Unlock Document


Only half 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

Don't have an account?

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