Chapter 23 notes

6 Pages
97 Views

Department
Biological Sciences
Course Code
BIOA02H3
Professor
Kamini Persaud

This preview shows pages 1 and half of page 2. Sign up to view the full 6 pages of the document.
Description
Chapter 23: Species and their Formation 23.1 What are species? Species are the result of processes that unfold over time Speciation: process by which one species splits into 2 or more daughter species A species starts at a speciation event and ends either with extinction or another speciation event (produces daughter species) Happens gradually Interbreeding populationGenetically different but reproductively compatible -Also reproductively incompatible The point at which daughter populations can be considered a different species depends how you define distinct species Species=different kinds Defined in different ways 1) Morphological species concept: Recognize most species by their appearance Members look alike because they share alleles Use binomial system of nomenclaturebut we need something else because some males and females of the same species look alike and sometimes parents and offspring of same species dodont look alike 2) Biology species concept: Species are groups of actively or potentially interbreeding natural populations which are reproductively isolated from other such groups Individuals in a population can mate with each other but not with those of another population They are a distinct evolutionary unit within which genes recombine First level daughter populations are morphologically distinct, second level populations are morphologically and biologically distinct www.notesolution.com
More Less
Unlock Document

Only pages 1 and half of page 2 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