'Genetic drift' presentation slideshows

Principles of evolution , our heritage and The Origins of Life

Principles of evolution , our heritage and The Origins of Life What was life like a long time ago How did we come into being? Evolutionary History Darwin did not come up with his theories all by himself. Malthus and others set up a foundation that would allow Darwin to think as he did.

1.33k views • 98 slides

Evolutionary Mechanisms

Evolutionary Mechanisms. Genetic Drift (and Inbreeding). Sources of Genetic Variation. Mutation generates genetic variation Epigenetic modification changes expression of genes Genetic Drift causes fluctuations in allele frequencies and can reduce genetic variation. Natural Selection.

1.91k views • 85 slides

FLT

Sit Juniors vs Seniors Go to weebly ?A2?10 examples of natural selection Pick 2 to look over including #8. FLT. I can communicate my findings to my peers through the mini-poster presentation Need 7 post-its to leave. In your table, come up with the best definition of natural selection.

1.19k views • 79 slides

SBI3U Evolution Test Review--School Reach Questions

SBI3U Evolution Test Review--School Reach Questions. # Question Answer . 1 A scientific statement must be able to be this? Falsifiable (proven false) . 2 How do the fossils found deeper in the rocks compare with respect to complexity and age? Less complex and older .

1.02k views • 67 slides

Population Genetics

1.11k views • 47 slides

Lecture 2: Evolution of Populations Campbell & Reece chapters: Chapter 23

822 views • 45 slides

Invasive Species

Invasive Species. September 5 th , 2007. Announcements:. Check out Case Studies posted on website (if you forgot which group you are in, scroll through to find your name, or ask me) Come prepared for class discussion tomorrow Background Field Trip Questions: now posted

636 views • 41 slides

Seed collection Can we improve the unimproved seeds?

Seed collection Can we improve the unimproved seeds?. UPSC 070510 Dag Lindgren. Considerations are on a link which can be reached from my web: http://www-genfys.slu.se/staff/dagl/Frotakt/Utredning.htm. Only collections of Swedish Scots pine and Norway spruce considered.

419 views • 39 slides

Speciation

726 views • 37 slides

Unit 5: Evolution through Natural Selection and other Mechanisms

Unit 5: Evolution through Natural Selection and other Mechanisms. Natural Selection.

430 views • 26 slides

Evolution Part 2

428 views • 23 slides

EVOLUTION AND TAXONOMY REVIEW

EVOLUTION AND TAXONOMY REVIEW. EVOLUTION. IS A CHANGE IN FREQUENCY OF CERTAIN GENES IN A POPULATION MAY BE USED TO EXPLAIN THE DISAPPEARANCE OF A GENETIC TRAIT IS ALWAYS POSSIBLE RELATES MORE TO A POPULATION THAN A SPECIES. HOMOLOGOUS STRUCTURES. FORM DUE TO DIVERGENT EVOLUTION

391 views • 21 slides

Lecture 32 Emerging viruses

Lecture 32 Emerging viruses. Definition: viruses that are in the process of adapting to a new host and vice versa. Though emerging viruses tend to be at first highly virulent, virus and host co-evolutionary processes tend to converge to less virulent virus and more resistant host populations.

663 views • 20 slides

Lecture 7: Adaptive Explanation

Lecture 7: Adaptive Explanation. Are all phenotypic traits adaptations? The Adaptationist program Gould & Lewontin Mayr. The Adaptationist Program. 1) identify trait likely to be under selection 2) construct functional argument for how trait has adaptive value (relate to fitness )

554 views • 19 slides

The Mutation Theory and the Species-Concept

533 views • 19 slides

Hickory Dickory Dock: Understanding the Molecular Clock

472 views • 18 slides

AP Biology Chapter 23

AP Biology Chapter 23. The Evolution of Populations. Population genetics. Population: a localized group of individuals belonging to the same species Species: a group of populations whose individuals have the potential to interbreed and produce fertile offspring Gene pool :

453 views • 16 slides

15.2 PDQ

532 views • 10 slides

The Hardy-Weinberg Equilibrium

717 views • 9 slides

Population Genetics

Population Genetics. The Hardy-Weinberg principle Factors that can change allele frequencies. A. The Hardy-Weinberg Principle. The frequency of an allele in a population will remain constant over time, provided that the following conditions are met:

187 views • 4 slides