File
... (a) Circle/highlight the statement which is not a part of Charles Darwin’s understanding of natural selection: (i) Offspring tend to resemble their parents (ii) Characteristics are passed on from parents to offspring through genes (iii) Over time, populations become better suited to their environmen ...
... (a) Circle/highlight the statement which is not a part of Charles Darwin’s understanding of natural selection: (i) Offspring tend to resemble their parents (ii) Characteristics are passed on from parents to offspring through genes (iii) Over time, populations become better suited to their environmen ...
Chapter 12
... A genotype is likely to have different phenotypic expressions as a result of environmental influences on development, so the fitness of genotype is the mean of the fitness of its several phenotypes. The fitness of a genotype is the average lifetime contribution of individuals of that genotype to the ...
... A genotype is likely to have different phenotypic expressions as a result of environmental influences on development, so the fitness of genotype is the mean of the fitness of its several phenotypes. The fitness of a genotype is the average lifetime contribution of individuals of that genotype to the ...
Chapter14_Outline
... reproduce in a particular environment give rise to a disproportionate share of the offspring 4. Random genetic drift = the random, undirected changes in allele frequencies, especially in small populations ...
... reproduce in a particular environment give rise to a disproportionate share of the offspring 4. Random genetic drift = the random, undirected changes in allele frequencies, especially in small populations ...
Natural selection
... hypothesis,what you would expect) Do experimentation that results in either retaining null OR rejecting it in favor of your alternative hypothesis ...
... hypothesis,what you would expect) Do experimentation that results in either retaining null OR rejecting it in favor of your alternative hypothesis ...
DQ handout
... 1. induce mutations and look for mutants that lie outside correlation line. 2. characterize pleiotropic and epistatic effects 3. select on one trait and then look for correlated effect on others (mechanistically linked?) 4. comparative method—when dealing w/ correlated characters can tell what was s ...
... 1. induce mutations and look for mutants that lie outside correlation line. 2. characterize pleiotropic and epistatic effects 3. select on one trait and then look for correlated effect on others (mechanistically linked?) 4. comparative method—when dealing w/ correlated characters can tell what was s ...
PowerPoint
... Search for Genes that experienced artificial (and natural) selection Akin in sprit to testing candidate genes for association or using genome scans to find QTLs. In linkage studies: Use molecular markers to look for marker-trait associations (phenotypes) In tests for selection, use molecular marker ...
... Search for Genes that experienced artificial (and natural) selection Akin in sprit to testing candidate genes for association or using genome scans to find QTLs. In linkage studies: Use molecular markers to look for marker-trait associations (phenotypes) In tests for selection, use molecular marker ...
final exam review sheet
... 2. Show the cross between a heterozygous green plant and a yellow plant. Give the phenotype and genotype ratio. 3. Show the cross between a homozygous running, heterozygous black mouse with a heterozygous running, brown mouse. Give the parental genotypes and the phenotype ratio. 4. Draw a haploid hu ...
... 2. Show the cross between a heterozygous green plant and a yellow plant. Give the phenotype and genotype ratio. 3. Show the cross between a homozygous running, heterozygous black mouse with a heterozygous running, brown mouse. Give the parental genotypes and the phenotype ratio. 4. Draw a haploid hu ...
C1. The first principle is that there is genetic variation within natural
... would probably divide bacteria into different species based on the sequences of their DNAs. When the sequence differences had reached some arbitrary level, two populations of bacteria would be considered separate species. Historically, bacteria were first categorized as different species based on mo ...
... would probably divide bacteria into different species based on the sequences of their DNAs. When the sequence differences had reached some arbitrary level, two populations of bacteria would be considered separate species. Historically, bacteria were first categorized as different species based on mo ...
Document
... would probably divide bacteria into different species based on the sequences of their DNAs. When the sequence differences had reached some arbitrary level, two populations of bacteria would be considered separate species. Historically, bacteria were first categorized as different species based on mo ...
... would probably divide bacteria into different species based on the sequences of their DNAs. When the sequence differences had reached some arbitrary level, two populations of bacteria would be considered separate species. Historically, bacteria were first categorized as different species based on mo ...
BIO41 CH23.pptx
... v Because the environment can change, adaptive evolution is a continuous process v Genetic drift and gene flow do not consistently lead to adaptive evolution as they can increase or decrease fitness, the match between an organism and its environment ...
... v Because the environment can change, adaptive evolution is a continuous process v Genetic drift and gene flow do not consistently lead to adaptive evolution as they can increase or decrease fitness, the match between an organism and its environment ...
2015 Biology Spring Final Review
... Set up and predict outcomes using a Punnett Squares: Here are some example questions: ...
... Set up and predict outcomes using a Punnett Squares: Here are some example questions: ...
Notes 1 Ch 23 Evolution_Pop
... Gene Pools and Allele Frequencies Population: a localized group of individuals that are capable of interbreeding and producing fertile offspring; some are isolated, some are not Gene Pool: the total aggregate of genes in a population at any one time ...
... Gene Pools and Allele Frequencies Population: a localized group of individuals that are capable of interbreeding and producing fertile offspring; some are isolated, some are not Gene Pool: the total aggregate of genes in a population at any one time ...
Document
... success are not always adaptive for the survival of the individual (Red or blue feathers). How can these traits evolve if it makes them easily spotted by predators? ...
... success are not always adaptive for the survival of the individual (Red or blue feathers). How can these traits evolve if it makes them easily spotted by predators? ...
Cooperation and Altruism: An Evolutionary
... one that he refers to as “soft-core”. While one might view reciprocal altruism as more individualistic and more selfish (done primarily for personal gain), Wilson suggests that this type of altruism is the key to society. In a passage from On Human Nature, Wilson observes: ... pure, hard-core altrui ...
... one that he refers to as “soft-core”. While one might view reciprocal altruism as more individualistic and more selfish (done primarily for personal gain), Wilson suggests that this type of altruism is the key to society. In a passage from On Human Nature, Wilson observes: ... pure, hard-core altrui ...
Slide 1
... C2: As a result of this variation, some organisms will be more likely to survive and reproduce than others – there will be differential reproductive success. C3: The population change through time, as adaptive traits accumulate in the population. Corollary: Two populations, isolated in different env ...
... C2: As a result of this variation, some organisms will be more likely to survive and reproduce than others – there will be differential reproductive success. C3: The population change through time, as adaptive traits accumulate in the population. Corollary: Two populations, isolated in different env ...
Processes of Evolution
... may come to resemble each other if they have similar ecological roles and natural selection has shaped similar adaptations. • Divergent Evolution; the process where two species have diverged from one common ancestor. (most common form of evolution) ...
... may come to resemble each other if they have similar ecological roles and natural selection has shaped similar adaptations. • Divergent Evolution; the process where two species have diverged from one common ancestor. (most common form of evolution) ...
Due
... “How do Organisms Evolve?” (pg. 231-237) - Read the first paragraph and complete Stop & Think questions 1-3 as a class - Independently and quietly finish reading and complete stop & think questions 4-10. ...
... “How do Organisms Evolve?” (pg. 231-237) - Read the first paragraph and complete Stop & Think questions 1-3 as a class - Independently and quietly finish reading and complete stop & think questions 4-10. ...
PowerPoint - University of Arizona
... A typical adaptive selective sweep is generally thought to occur following the introduction of a single favorable new mutation. Hence, only one founding haplotype at the time of selection. ...
... A typical adaptive selective sweep is generally thought to occur following the introduction of a single favorable new mutation. Hence, only one founding haplotype at the time of selection. ...
Understanding the Theory of Evolution Isn`t evolution “just”
... and there, however, separated by several kilometers of light-colored substrate, are patches of dark volcanic rocks that formed from cooling lava flows. The different coloration of the mice allow for camouflage from predators on the different desert floors. These mice provide the perfect system for s ...
... and there, however, separated by several kilometers of light-colored substrate, are patches of dark volcanic rocks that formed from cooling lava flows. The different coloration of the mice allow for camouflage from predators on the different desert floors. These mice provide the perfect system for s ...
Document
... - individuals chose “like” mates (not necessarily relatives) Negative assortative mating ...
... - individuals chose “like” mates (not necessarily relatives) Negative assortative mating ...
Group selection
Group selection is a proposed mechanism of evolution in which natural selection is imagined to act at the level of the group, instead of at the more conventional level of the individual.Early authors such as V. C. Wynne-Edwards and Konrad Lorenz argued that the behavior of animals could affect their survival and reproduction as groups.From the mid 1960s, evolutionary biologists such as John Maynard Smith argued that natural selection acted primarily at the level of the individual. They argued on the basis of mathematical models that individuals would not altruistically sacrifice fitness for the sake of a group. They persuaded the majority of biologists that group selection did not occur, other than in special situations such as the haplodiploid social insects like honeybees (in the Hymenoptera), where kin selection was possible.In 1994 David Sloan Wilson and Elliott Sober argued for multi-level selection, including group selection, on the grounds that groups, like individuals, could compete. In 2010 three authors including E. O. Wilson, known for his work on ants, again revisited the arguments for group selection, provoking a strong rebuttal from a large group of evolutionary biologists. As of yet, there is no clear consensus among biologists regarding the importance of group selection.