unit 4 populations & environment selection & speciation ... · aqa gce biology a2 award...

AQA GCE Biology A2 Award 2411 Unit 4 Populations & Environment Selection & Speciation Practice Exam Questions

Upload: dodieu

Post on 02-Apr-2018

262 views

Category:

Documents

6 download

Report

Download

Embed Size (px):

TRANSCRIPT

AQA GCE Biology A2 Award 2411

Unit 4

Populations & Environment

Selection & Speciation

Practice Exam Questions

AQA GCE Biology A2 Award 2411

AQA GCE Biology A2 Award 2411 2.

AQA GCE Biology A2 Award 2411

AQA GCE Biology A2 Award 2411 4.

Page 8: Unit 4 Populations & Environment Selection & Speciation ... · AQA GCE Biology A2 Award 2411 Unit 4 Populations & Environment Selection & Speciation Practice Exam Questions

AQA GCE Biology A2 Award 2411 5.

AQA GCE Biology A2 Award 2411

Selection and Speciation

Answers & Markscheme

AQA GCE Biology A2 Award 2411

Question 2

AQA GCE Biology A2 Award 2411

Total 6

Question 4

AQA GCE Biology A2 Award 2411

Question 5

* * Speciation & Patterns of Evolution. * Explain how the isolation (physical or genetic) of populations can lead to speciation. * Objectives

Speciation Speciation refers to the process by which new species are formed. Speciation occurs when gene flow has ceased between populations where it previously

Selection Pressure & Speciation

Selection on X-linked Genes During Speciation in the ...Copvright 0 1996 by the Genetics Society of America Selection on X-linked Genes During Speciation in the Drosophila athabasca

selection in finite populations. 11. the selection limit and rate of

Populations, Variety, and Selection: Verifying Complex Designs

Natural Selection & Speciation Science & Society Picture Library

Natural Selection affects populations in a variety of ways Stabilizing selection Directional selection Disruptive selection Sexual selection

17.3 – The Process of Speciation Chapter 17 – Evolution of Populations 17.3 The Process of Speciation

CH 17 POPULATIONS GENETICS AND SPECIATION IMPACTS, ISSUES RISE OF THE SUPER RATS

Speciation and Macroevolution Chapter 24, 25. Evolution Microevolution is changes within a population Speciation when changes among populations is significant

POPULATION GENETICS, SELECTION AND SPECIATION

11.5 Speciation Through Isolation KEY CONCEPT New species can arise when populations are isolated

Divergent Selection on Opsins Drives Incipient Speciation in Lake

THE THEORY OF EVOLUTION Natural Selection & Speciation

Evidence for Ecological Speciation and Its Alternative ......Mechanisms of speciation by selection fall into two broad categories: ecological and mutation-order. Under ecological speciation,

11.2 Natural Selection in Populations KEY CONCEPT Populations, not individuals, evolve

Evolution, Natural Selection, and Speciation

CONSERVATION AND BIODIVERISTY. BIODIVERISITY EVOLUTION SPECIATION MUTATIONSNATURAL SELECTION GEOGRAPHIC ISOLATION GENETIC DRIFT

SPECIATION -The Origin of Species. What is speciation? Recap: Species = a population or group of populations whose individual members can interbreed

The Process of Speciation Natural selection and genetic ...mrdones.weebly.com/uploads/1/3/1/1/13112687/bio_ch17s3_ppt_1213.… · The Process of Speciation Natural selection and genetic

Foothill High School Science Department Evolution of Populations The Process of Speciation

Evolution Natural Selection And Speciation 6371

Chapter 18 & 19 Evolutionary Change in Populations & Speciation

BIOLOGY: Chapter 16 “The Evolution of Populations & Speciation”

Chapter 16: Evolution of Populations and Speciation

Natural Selection, Speciation, and Evolution Textbook Reference Chapter 14 & 15

Sexual selection and speciation: field crickets as a model system

Speciation: How Species Form Lesson 6. SPECIATION Microevolution: changes in allele frequencies and phenotypic traits within populations and species;

Natural Selection, Evolution and Speciation Mark Scheme Q1

Natural Selection 4.1.2 OUTLINE THE MECHANISM OF NATURAL SELECTION AS A POSSIBLE DRIVING FORCE FOR SPECIATION

Evolution, Natural Selection & Speciation

Natural Selection and Speciation

Lecture 23. Speciation Mechanismshydrodictyon.eeb.uconn.edu/eebedia/images/f/fd/...Categories of Speciation Mechanisms A) Genetic divergence 1)! Drift or drift + selection 2)! Selection

Speciation Outline 1. Speciation – what is it? 2. Reproductive isolation 3.Drift versus Selection 4.Geography of Speciation