Quiz 3, February 6, 2003
... a. MUTATION is the original source of genetic variation within populations. b. NATURAL SELECTION is a process by which individuals with particular heritable characters survive and reproduce at a higher rate than other individuals in a population. c. GENETIC DRIFT is a random process that is most inf ...
... a. MUTATION is the original source of genetic variation within populations. b. NATURAL SELECTION is a process by which individuals with particular heritable characters survive and reproduce at a higher rate than other individuals in a population. c. GENETIC DRIFT is a random process that is most inf ...
Methods of Speciation
... How New Species May Arise Allopatric Speciation “Different Country Speciation” In this case, members of a population become geographically isolated from each other and thus have very little or no gene flow between them. Mutations arise in the separated population and natural selection happens and o ...
... How New Species May Arise Allopatric Speciation “Different Country Speciation” In this case, members of a population become geographically isolated from each other and thus have very little or no gene flow between them. Mutations arise in the separated population and natural selection happens and o ...
Section 1: The theory of evolution by natural selection
... 7. Species that diverged recently have _______________________ genetic differences than those species that are not closely related. 8. There is (are) ________________________ difference(s) between the amino acid sequence of the hemoglobin in humans and the hemoglobin in gorillas. 9. There are ______ ...
... 7. Species that diverged recently have _______________________ genetic differences than those species that are not closely related. 8. There is (are) ________________________ difference(s) between the amino acid sequence of the hemoglobin in humans and the hemoglobin in gorillas. 9. There are ______ ...
Date of quizzz: ______ My goal is to earn _____
... Common ancestor Derived characteristic Genetic variation ...
... Common ancestor Derived characteristic Genetic variation ...
10 - gwbiology
... 10. Species help to distinguish between different types of plants and animals by their difference appearances. Species can be determined by their physical form or structure called morphology, other factors that can determine a species is differentiation in body functions, biochemistry, behavior and ...
... 10. Species help to distinguish between different types of plants and animals by their difference appearances. Species can be determined by their physical form or structure called morphology, other factors that can determine a species is differentiation in body functions, biochemistry, behavior and ...
Divergent evolution: Same basic structure, different appearance
... · Allopatric: Physical barrier, isolation can be rapid, influenced by differences in environments · Sympatric: Same country, separated by intrinsic factors, populations evolve separately within range of parent species/same environment, behavioural differences Hardy-Weinberg Principle: · Phenotypic f ...
... · Allopatric: Physical barrier, isolation can be rapid, influenced by differences in environments · Sympatric: Same country, separated by intrinsic factors, populations evolve separately within range of parent species/same environment, behavioural differences Hardy-Weinberg Principle: · Phenotypic f ...
Evolution Essay Questions
... 1. Explain how the ratio of dominant to recessive alleles within a population can tell you if a population is evolving. In your explanation list the conditions that need to be in place for evolution not to happen, why we are concerned about alleles vs phenotypes, and an example of how each of the fi ...
... 1. Explain how the ratio of dominant to recessive alleles within a population can tell you if a population is evolving. In your explanation list the conditions that need to be in place for evolution not to happen, why we are concerned about alleles vs phenotypes, and an example of how each of the fi ...
Enriched Biology Dremann Metzendorf Bag 3
... 8. The two main sources of genetic variation are… 9. In genetic drift, allele frequencies change because of… 10. Genetic drift tends to occur in populations that… 12. The situation in which allele frequencies of a population remain constant is called… 13. The separation of populations by barriers su ...
... 8. The two main sources of genetic variation are… 9. In genetic drift, allele frequencies change because of… 10. Genetic drift tends to occur in populations that… 12. The situation in which allele frequencies of a population remain constant is called… 13. The separation of populations by barriers su ...
Evolution Notes
... Evidence of Evolution • Evolution occurs over millions of years and cannot be seen in one lifetime • Scientists rely on evidence to support the Theory of Evolution 1.Adaptations _____________________- structure of behavior that helps an organism better survive in its environment. _______________- st ...
... Evidence of Evolution • Evolution occurs over millions of years and cannot be seen in one lifetime • Scientists rely on evidence to support the Theory of Evolution 1.Adaptations _____________________- structure of behavior that helps an organism better survive in its environment. _______________- st ...
power point
... can greatly affect small populations making recessive alleles more common than in the larger population, ...
... can greatly affect small populations making recessive alleles more common than in the larger population, ...
Selective Pressures and Speciation
... canyon’s south rim (L). Just a few miles away on the north rim (R) lives the closely related whitetailed antelope ...
... canyon’s south rim (L). Just a few miles away on the north rim (R) lives the closely related whitetailed antelope ...
Evolution: An Introduction
... What is the Theory of Evolution? • Evolution is the process in which significant changes to genetic traits of a species occur over successive generations i.e. any shift in the gene pool of a population ...
... What is the Theory of Evolution? • Evolution is the process in which significant changes to genetic traits of a species occur over successive generations i.e. any shift in the gene pool of a population ...
1. Jean-Baptiste Lamark (1809)
... * Darwin published his book more than 20 years after returning from his voyage. Why? ...
... * Darwin published his book more than 20 years after returning from his voyage. Why? ...
Darwin info Sheet
... descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simp ...
... descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simp ...
Evolution - Leeming-Biology-12
... within the parent population (e.g. race or religion) or in isolation from the parent population (e.g. migration). • In both cases, interbreeding (gene flow) between the two populations is disrupted. ...
... within the parent population (e.g. race or religion) or in isolation from the parent population (e.g. migration). • In both cases, interbreeding (gene flow) between the two populations is disrupted. ...
Evolution
... within the parent population (e.g. race or religion) or in isolation from the parent population (e.g. migration). • In both cases, interbreeding (gene flow) between the two populations is disrupted. ...
... within the parent population (e.g. race or religion) or in isolation from the parent population (e.g. migration). • In both cases, interbreeding (gene flow) between the two populations is disrupted. ...
Shaping Evolutionary Theory - Biology-RHS
... What are the four principles of natural selection? Why is understanding natural selection key to understanding evolution? What similarities and differences exist between homologous structures and analogous structures? Compare mimicry and camouflage ...
... What are the four principles of natural selection? Why is understanding natural selection key to understanding evolution? What similarities and differences exist between homologous structures and analogous structures? Compare mimicry and camouflage ...
Chapter 16
... -Genes moving from one population to another -gene flow increases variation Genetic Drift -allele frequencies in a population change -small populations are affected more by gene drift than large populations. Page 305 Ex. Elephant seals and Cheetahs- both species are homozygous for almost all traits ...
... -Genes moving from one population to another -gene flow increases variation Genetic Drift -allele frequencies in a population change -small populations are affected more by gene drift than large populations. Page 305 Ex. Elephant seals and Cheetahs- both species are homozygous for almost all traits ...
Class - Quia
... b) determinethe evolutionaryrelationshipsamong species' c) decidewhich fossils are older than others. ...
... b) determinethe evolutionaryrelationshipsamong species' c) decidewhich fossils are older than others. ...
Chapter 6 Notes--EVOLUTION
... (ie: Mattson makes up a population, City of Kent makes up a population) ...
... (ie: Mattson makes up a population, City of Kent makes up a population) ...
Koinophilia
Koinophilia is an evolutionary hypothesis concerning sexual selection which proposes that animals seeking mate preferentially choose individuals with a minimum of unusual features. Koinophilia intends to explain the clustering of organisms into species and other issues described by Darwin's Dilemma. The term derives from the Greek, koinos, ""the usual"", and philos, ""fondness"".Natural selection causes beneficial inherited features to become more common and eventually replace their disadvantageous counterparts. A sexually-reproducing animal would be expected to avoid individuals with unusual features, and to prefer to mate with individuals displaying a predominance of common or average features. This means that mates displaying mutant features are also avoided. This is advantageous because most mutations that manifest themselves as changes in appearance, functionality or behavior, are disadvantageous. Because it is impossible to judge whether a new mutation is beneficial or not, koinophilic animals avoid them all, at the cost of avoiding the occasional beneficial mutation. Thus, koinophilia, although not infallible in its ability to distinguish fit from unfit mates, is a good strategy when choosing a mate. A koinophilic choice ensures that offspring are likely to inherit features that have been successful in the past.Koinophilia differs from assortative mating, where ""like prefers like"". If like preferred like, leucistic animals (such as white peacocks) would be sexually attracted to one another, and a leucistic subspecies would come into being. Koinophilia predicts that this is unlikely because leucistic animals are attracted to the average in the same way as other animals. Since non-leucistic animals are not attracted by leucism, few leucistic individuals find mates, and leucistic lineages will rarely form.Koinophilia provides simple explanations for the rarity of speciation (in particular Darwin's Dilemma), evolutionary stasis, punctuated equilibria, and the evolution of cooperation. Koinophilia might also contribute to the maintenance of sexual reproduction, preventing its reversion to the much simpler and inherently more advantageous asexual form of reproduction.The koinophilia hypothesis is supported by research into the physical attractiveness of human faces by Judith Langlois and her co-workers. They found that the average of two human faces was more attractive than either of the faces from which that average was derived. The more faces (of the same gender and age) that were used in the averaging process the more attractive and appealing the average face became. This work into averageness supports koinophilia as an explanation of what constitutes a beautiful face, and how the individuality of a face is recognized.