Traditionally, evolutionary psychology has been focussing on expl
... frequently than introverts. No direct evidence has been found in support for the third hypothesis, as ...
... frequently than introverts. No direct evidence has been found in support for the third hypothesis, as ...
Lecture PPT - Carol Eunmi LEE - University of Wisconsin–Madison
... Hypotheses on mutation rate variation among lineages: • Generation-time hypothesis. Groups with shorter generations evolve faster because they experience more rounds of germ-cell divisions during an arbitrary unit of time. More rounds of germ-line divisions mean additional DNA synthesis and extra op ...
... Hypotheses on mutation rate variation among lineages: • Generation-time hypothesis. Groups with shorter generations evolve faster because they experience more rounds of germ-cell divisions during an arbitrary unit of time. More rounds of germ-line divisions mean additional DNA synthesis and extra op ...
mutation - Carol Eunmi LEE - University of Wisconsin–Madison
... in Heterozygote form, not exposed to selection) ...
... in Heterozygote form, not exposed to selection) ...
Video Information Physical Anthropology: The Evolving Human Anthropology 101 The Anthropological Perspective
... Lesson 13 Patterns of Variation The lesson begins with comments on some instances of ethnic genocide that have occurred in the past in the Sudan, Rwanda, Bosnia, and Nazi Germany during World War II. It relates these occurrences to the concept of “race,” a concept based on physical differences betwe ...
... Lesson 13 Patterns of Variation The lesson begins with comments on some instances of ethnic genocide that have occurred in the past in the Sudan, Rwanda, Bosnia, and Nazi Germany during World War II. It relates these occurrences to the concept of “race,” a concept based on physical differences betwe ...
natural selection - sciencesebastian
... • A mutation is a change in an organism’s DNA. • A new mutation that is transmitted in gametes can immediately change the gene pool of a population by substituting the mutated allele for the older allele. • For any single locus, mutation alone does not have much quantitative effect on a large popul ...
... • A mutation is a change in an organism’s DNA. • A new mutation that is transmitted in gametes can immediately change the gene pool of a population by substituting the mutated allele for the older allele. • For any single locus, mutation alone does not have much quantitative effect on a large popul ...
Response_To_Selection_RBP
... Response of a quantitative trait to selection depends on: 1. the relationship between fitness and phenotype 2. the phenotypic variance 3. the degree to which the trait is heritable ...
... Response of a quantitative trait to selection depends on: 1. the relationship between fitness and phenotype 2. the phenotypic variance 3. the degree to which the trait is heritable ...
Prentice Hall Biology
... the columns, write the following heads: Animal Group, Example, Legs, Fins, and Tail. Then, place the following animal groups in their own row: Mammal, Bird, Fish, Amphibian, Reptile, and Insect. 2. Give one example for each group, and then fill in the information for that example. For Legs, write in ...
... the columns, write the following heads: Animal Group, Example, Legs, Fins, and Tail. Then, place the following animal groups in their own row: Mammal, Bird, Fish, Amphibian, Reptile, and Insect. 2. Give one example for each group, and then fill in the information for that example. For Legs, write in ...
Prentice Hall Review PPT. Ch.15
... the columns, write the following heads: Animal Group, Example, Legs, Fins, and Tail. Then, place the following animal groups in their own row: Mammal, Bird, Fish, Amphibian, Reptile, and Insect. 2. Give one example for each group, and then fill in the information for that example. For Legs, write in ...
... the columns, write the following heads: Animal Group, Example, Legs, Fins, and Tail. Then, place the following animal groups in their own row: Mammal, Bird, Fish, Amphibian, Reptile, and Insect. 2. Give one example for each group, and then fill in the information for that example. For Legs, write in ...
Using Genomics to Understand Patterns of Inheritance GENA
... protein sequencing and compare genetic variations among species. • Evolution is driven by changes in the relative frequencies of heritable traits in a group of organisms over time. o Traits are inherited, passed through the generation through reproduction; reproduction is a driving force of evolutio ...
... protein sequencing and compare genetic variations among species. • Evolution is driven by changes in the relative frequencies of heritable traits in a group of organisms over time. o Traits are inherited, passed through the generation through reproduction; reproduction is a driving force of evolutio ...
Challenge Lesson Analyzing DNA
... matched the sequence you entered into the database. The higher the score, the better a match it is. Scores in the range of 500 indicate very good matches. This score takes into account how identical the two sequences are (the “Query coverage” column) and over how long of a stretch of DNA the two seq ...
... matched the sequence you entered into the database. The higher the score, the better a match it is. Scores in the range of 500 indicate very good matches. This score takes into account how identical the two sequences are (the “Query coverage” column) and over how long of a stretch of DNA the two seq ...
Evolution of Allometry in Antirrhinum
... node from the base of each plant, and 19 points were placed around the leaf outline using the leaf (Le) template shown in Figure 2A. The resulting leaf shapes were aligned by translation and rotation (Procrustes alignment; Goodall, 1991) to generate a data set in which the outline of a leaf was repr ...
... node from the base of each plant, and 19 points were placed around the leaf outline using the leaf (Le) template shown in Figure 2A. The resulting leaf shapes were aligned by translation and rotation (Procrustes alignment; Goodall, 1991) to generate a data set in which the outline of a leaf was repr ...
Gregor Mendel and Genetics Review
... white-flowered, longstemmed plant, would all of the purpleflowered offspring also have short stems? Why or why not? If Darwin knew of Mendel’s work, how might it have influenced his theory of evolution? Do you think this would have affected how well Darwin’s work was accepted? Explain Mendel’s l ...
... white-flowered, longstemmed plant, would all of the purpleflowered offspring also have short stems? Why or why not? If Darwin knew of Mendel’s work, how might it have influenced his theory of evolution? Do you think this would have affected how well Darwin’s work was accepted? Explain Mendel’s l ...
Galapagos Islands - jscheck
... Darwin observed that each different group of finches had different size and shape beaks and each group had their own unique feeding habits. After returning to England, Darwin puzzled over the animals of the Galapagos Islands. He tried to explain why the animals seemed so similar to each other yet ha ...
... Darwin observed that each different group of finches had different size and shape beaks and each group had their own unique feeding habits. After returning to England, Darwin puzzled over the animals of the Galapagos Islands. He tried to explain why the animals seemed so similar to each other yet ha ...
- CSIRO Publishing
... The team members caught every finch they could, banded and colour-banded them, measured and weighed them. They also measured finch behaviour, to find that the finches were concentrating on about two dozen different sorts of seeds. They measured each type of seed and its hardness, then combined these ...
... The team members caught every finch they could, banded and colour-banded them, measured and weighed them. They also measured finch behaviour, to find that the finches were concentrating on about two dozen different sorts of seeds. They measured each type of seed and its hardness, then combined these ...
ppt_ch30_evolution_o..
... substances present in early earth’s atmosphere by the action of UV radiation and lightning. ...
... substances present in early earth’s atmosphere by the action of UV radiation and lightning. ...
12.1 The Fossil Record
... • A natural cast forms when flowing water removes all of the original tissue, leaving an impression. ...
... • A natural cast forms when flowing water removes all of the original tissue, leaving an impression. ...
On current utility and adaptive significance - synergy
... of inbred offspring, and costs involved in avoiding inbreeding. In the absence of inbreeding depression, their reasoning would predict that self-fertilization will always be favored over outcrossing. However, obligate selfing is, in effect, a form of asexuality. So too is, for example, obligate brot ...
... of inbred offspring, and costs involved in avoiding inbreeding. In the absence of inbreeding depression, their reasoning would predict that self-fertilization will always be favored over outcrossing. However, obligate selfing is, in effect, a form of asexuality. So too is, for example, obligate brot ...
The State of Lake Huron in 2002 – Genetic diversity
... responsible for spatial heterogeneity. Historically, population genetic analyses were restricted to traditional measures that were performed for pre-defined populations. Exciting new technological advances including availability of remotely sensed data, advances in spatial analyses, and hypervariabl ...
... responsible for spatial heterogeneity. Historically, population genetic analyses were restricted to traditional measures that were performed for pre-defined populations. Exciting new technological advances including availability of remotely sensed data, advances in spatial analyses, and hypervariabl ...
Early History Of Life and Animal Origins
... Mass extinctions were followed by adaptive radiations ...
... Mass extinctions were followed by adaptive radiations ...
Slide 1
... An inherited trait that increases an organisms chance of survival and reproduction in a certain environment. ...
... An inherited trait that increases an organisms chance of survival and reproduction in a certain environment. ...
zly 103 platyhelminthes
... Eggs hatch and the miracidium seeks out a snail. Within the snail, it develops into a sporocyst and asexual reproduction takes place. Cercaria are eventually released into the water. Cercaria swims and avoids UV light which can damage it, but is very sensitive to the scent of humans. Certain molecul ...
... Eggs hatch and the miracidium seeks out a snail. Within the snail, it develops into a sporocyst and asexual reproduction takes place. Cercaria are eventually released into the water. Cercaria swims and avoids UV light which can damage it, but is very sensitive to the scent of humans. Certain molecul ...
Evolution of Floral Symmetry
... hypothesis as it seems to suggest that many independent mechanisms for generating irregularity have evolved. However, it is possible that some of the different types of irregular flowers share the same underlying mechanism for generating asymmetry. The differences may simply reflect the imposition o ...
... hypothesis as it seems to suggest that many independent mechanisms for generating irregularity have evolved. However, it is possible that some of the different types of irregular flowers share the same underlying mechanism for generating asymmetry. The differences may simply reflect the imposition o ...
netwatch - Science
... latest developments, visit Fossil Hominids: The Evidence for Human Evolution, a well-written overview created by enthusiast Jim Foley. The human evolutionary story swarms with almost as many characters as a Dickens novel, so Foley supplies a brief guide to our close relatives. You can unearth the ba ...
... latest developments, visit Fossil Hominids: The Evidence for Human Evolution, a well-written overview created by enthusiast Jim Foley. The human evolutionary story swarms with almost as many characters as a Dickens novel, so Foley supplies a brief guide to our close relatives. You can unearth the ba ...
Reading guide
... which will concern us in this course. His “swamping” argument held that natural selection cannot cause a rare variant to spread, because the rare variant would be swamped by backcrossing with the common type. You will find this argument on pp. 6–11 of the version of Jenkin’s review I have posted on ...
... which will concern us in this course. His “swamping” argument held that natural selection cannot cause a rare variant to spread, because the rare variant would be swamped by backcrossing with the common type. You will find this argument on pp. 6–11 of the version of Jenkin’s review I have posted on ...
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.