Evolution Unit Summary
... Microevolution occurs when allele frequencies in the gene pool change from generation to generation. (8.1) Natural selection, sexual selection, artificial selection, genetic drift, and gene flow are the mechanisms of microevolution. (8.1) Directional, disruptive, and stabilizing selection affe ...
... Microevolution occurs when allele frequencies in the gene pool change from generation to generation. (8.1) Natural selection, sexual selection, artificial selection, genetic drift, and gene flow are the mechanisms of microevolution. (8.1) Directional, disruptive, and stabilizing selection affe ...
Ecology Unit Outline
... Islands, Ecuador. Explain how the observation you selected supports Darwin’s Theory of evolution. 2. Read Chapter 15.1 & 15.2 (pgs 369-377) of your textbook. Complete Unit Objectives #3-5. Please use complete sentences. This will be collected and graded. 3. Read Chapter 15.3 (pgs 378-386) of your te ...
... Islands, Ecuador. Explain how the observation you selected supports Darwin’s Theory of evolution. 2. Read Chapter 15.1 & 15.2 (pgs 369-377) of your textbook. Complete Unit Objectives #3-5. Please use complete sentences. This will be collected and graded. 3. Read Chapter 15.3 (pgs 378-386) of your te ...
test 16
... _____12. Length, weight, and many other quantitative traits in a population tend to show variation that, when plotted on a graph, looks like a. A population wave b. A bell curve c. A gene pool d. An equilibrium plot _____13. If a population of four o’clock flowers consists of five RR plants (red fl ...
... _____12. Length, weight, and many other quantitative traits in a population tend to show variation that, when plotted on a graph, looks like a. A population wave b. A bell curve c. A gene pool d. An equilibrium plot _____13. If a population of four o’clock flowers consists of five RR plants (red fl ...
Change in Populations
... will leave a greater proportion of offspring than less successful individuals. The limiting factor acts as a selection pressure. • Adaptation over time – environments change over time. Heritable characteristics that suit a particular environment will be selected. Populations divide over time and bec ...
... will leave a greater proportion of offspring than less successful individuals. The limiting factor acts as a selection pressure. • Adaptation over time – environments change over time. Heritable characteristics that suit a particular environment will be selected. Populations divide over time and bec ...
16-3 Notes - WordPress.com
... Geographic isolation does not always __________________ formation of a new species. It is possible that lakes can become connected during ______________ or _______________ _______________ may form between islands. This may allow separated populations to __________. ...
... Geographic isolation does not always __________________ formation of a new species. It is possible that lakes can become connected during ______________ or _______________ _______________ may form between islands. This may allow separated populations to __________. ...
Speciation and Barriers between Gene Pools
... closely than they resemble members of other demes. This similarity is to be expected, partly because the members are closely related genetically (similar genotypes), and partly because they experience the same environmental conditions (which affect their phenotype). The ways demes become isolated ha ...
... closely than they resemble members of other demes. This similarity is to be expected, partly because the members are closely related genetically (similar genotypes), and partly because they experience the same environmental conditions (which affect their phenotype). The ways demes become isolated ha ...
Evolution Guided Reading
... 11. In a wild flower population, the flower color demonstrates incomplete dominance. The allele frequency for the red allele (r) is 75% while that of the white allele (w) is 25%. Using the rule of multiplication, calculate the genotype frequencies for the three types of genotypes (rr, rw and ww). Wh ...
... 11. In a wild flower population, the flower color demonstrates incomplete dominance. The allele frequency for the red allele (r) is 75% while that of the white allele (w) is 25%. Using the rule of multiplication, calculate the genotype frequencies for the three types of genotypes (rr, rw and ww). Wh ...
What is Evolution??
... 1. Your model should account for at least some of the data supplied in the case study. 2. Your scenario must incorporate the three assigned concepts from the "Concept List" assigned to your group. For each concept you must demonstrate its relevance to your story. 3. Keep in mind that in an evolution ...
... 1. Your model should account for at least some of the data supplied in the case study. 2. Your scenario must incorporate the three assigned concepts from the "Concept List" assigned to your group. For each concept you must demonstrate its relevance to your story. 3. Keep in mind that in an evolution ...
File
... A. Allopatric Speciation- First step 1. Geographic Isolation-(extrinsic isolating mechanism). Two populations must become geographically isolated from one another. If the groups become sympatric again one of two things resultA. They have become separate species, and they can no longer interbreed B. ...
... A. Allopatric Speciation- First step 1. Geographic Isolation-(extrinsic isolating mechanism). Two populations must become geographically isolated from one another. If the groups become sympatric again one of two things resultA. They have become separate species, and they can no longer interbreed B. ...
Population - Hale AP Biology
... Phylogeny: the evolutionary history of a species or group of related species Systematics: classifies organisms and determines their evolutionary relationships ◦ use fossil, molecular, and genetic data to infer evolutionary relationships Taxonomy: the ordered division and naming of organisms Binomial ...
... Phylogeny: the evolutionary history of a species or group of related species Systematics: classifies organisms and determines their evolutionary relationships ◦ use fossil, molecular, and genetic data to infer evolutionary relationships Taxonomy: the ordered division and naming of organisms Binomial ...
THREE DOMAINS NOTES
... viable, fertile offspring but cannot (or at least usually do not) interbreed with members of other groups 2. Essential feature of the definition - reproductive isolation (genetic isolation) 3. Two separate species exist when the two can occupy the same space without interbreeding 4. Members of a spe ...
... viable, fertile offspring but cannot (or at least usually do not) interbreed with members of other groups 2. Essential feature of the definition - reproductive isolation (genetic isolation) 3. Two separate species exist when the two can occupy the same space without interbreeding 4. Members of a spe ...
Unit 8: Evolution Content Outline: Geologic Time and Processes (8.3
... A. This term refers to the evolution of a new taxon from a pre-existing taxon. (Basically, the evolution of a new species or higher on the classification scale.) B. Speciation – the creation of a completely new species from a past species. a. Allopatric speciation – speciation that occurs because of ...
... A. This term refers to the evolution of a new taxon from a pre-existing taxon. (Basically, the evolution of a new species or higher on the classification scale.) B. Speciation – the creation of a completely new species from a past species. a. Allopatric speciation – speciation that occurs because of ...
Lectures 1-7 (word format)
... ▶ Darwin’s finches again ▼ reproductive isolation leads to divergence • as mentioned last time, the lack of migration among islands means that changes that occur in one population via selection, drift or whatever means, cannot be passed on to another population • when this occurs the populations div ...
... ▶ Darwin’s finches again ▼ reproductive isolation leads to divergence • as mentioned last time, the lack of migration among islands means that changes that occur in one population via selection, drift or whatever means, cannot be passed on to another population • when this occurs the populations div ...
Chapter 16 Population Genetics and Speciation
... Species: a single kind of organism. Members are morphologically similar (external structure and appearance) and can interbreed to produce fertile offspring. (biological species concept) ...
... Species: a single kind of organism. Members are morphologically similar (external structure and appearance) and can interbreed to produce fertile offspring. (biological species concept) ...
Evolution Study Guide
... 1. Explain how isolation of populations can lead to speciation. 2. Describe how populations become isolated. Be able to name & give an example of each of the barriers (there are 3). 3. Explain how each of the barriers led to a lack of gene flow isolation, and how reproductive isolation is the las ...
... 1. Explain how isolation of populations can lead to speciation. 2. Describe how populations become isolated. Be able to name & give an example of each of the barriers (there are 3). 3. Explain how each of the barriers led to a lack of gene flow isolation, and how reproductive isolation is the las ...
Mader/Biology, 11/e – Chapter Outline
... shared gene pool, and each species is reproductively isolated from every other species. a. An advantage to this species concept is that it can designate species even when trait differences may be difficult to find. b. A disadvantage is that this concept cannot be applied to asexually reproducing org ...
... shared gene pool, and each species is reproductively isolated from every other species. a. An advantage to this species concept is that it can designate species even when trait differences may be difficult to find. b. A disadvantage is that this concept cannot be applied to asexually reproducing org ...
The Evolution of Populations and Speciation
... the next generation • Adaptation: any genetically controlled trait that increases an organism’s ability to pass along copies of its genes ...
... the next generation • Adaptation: any genetically controlled trait that increases an organism’s ability to pass along copies of its genes ...
Unit 7 History and Organization of Biological Diversity
... 1. Percent!of!the!original!material!is!left!after!one!halfIlife!______________________! 2. Percent!of!the!original!material!is!left!after!two!halfIlives!_____________________! 3. Percent!of!the!original!material!is!left!after!three!halfIlives!___________________! 4. Percent!of!the!original!material! ...
... 1. Percent!of!the!original!material!is!left!after!one!halfIlife!______________________! 2. Percent!of!the!original!material!is!left!after!two!halfIlives!_____________________! 3. Percent!of!the!original!material!is!left!after!three!halfIlives!___________________! 4. Percent!of!the!original!material! ...
解析高中生物課程 之演化和分類學
... Individuals with certain heritable characteristics survive and reproduce at a higher rate than other individuals Natural selection increases the adaptation of organisms to their environment over time If an environment changes over time, natural selection may result in adaptation to these new c ...
... Individuals with certain heritable characteristics survive and reproduce at a higher rate than other individuals Natural selection increases the adaptation of organisms to their environment over time If an environment changes over time, natural selection may result in adaptation to these new c ...
2. Evolution
... -two extreme traits are selected against- these are less common traits found on both edges of the curve -population does not shift, but has less variety of traits -the average does not change, but the FREQUENCY of the average trait has increased e.g. flower colour; selection against white and red fl ...
... -two extreme traits are selected against- these are less common traits found on both edges of the curve -population does not shift, but has less variety of traits -the average does not change, but the FREQUENCY of the average trait has increased e.g. flower colour; selection against white and red fl ...
Natural Selection
... change that occurs in the DNA of an individual, and that a heritable mutation has the potential to affect an entire gene pool. The more genetic variation there is in a population, the greater the diversity of the population and the greater the change of a selective advantage to some individuals in a ...
... change that occurs in the DNA of an individual, and that a heritable mutation has the potential to affect an entire gene pool. The more genetic variation there is in a population, the greater the diversity of the population and the greater the change of a selective advantage to some individuals in a ...
AP Biology Chapter 22 Notes
... difficilis respond to the songs of males from the same island but ignore the songs of males of the same species from other islands. B. In sympatric speciation, speciation occurs in geographically overlapping populations when biological factors, such as chromosomal changes and nonrandom mating, reduc ...
... difficilis respond to the songs of males from the same island but ignore the songs of males of the same species from other islands. B. In sympatric speciation, speciation occurs in geographically overlapping populations when biological factors, such as chromosomal changes and nonrandom mating, reduc ...
Sympatric speciation
Sympatric speciation is the process through which new species evolve from a single ancestral species while inhabiting the same geographic region. In evolutionary biology and biogeography, sympatric and sympatry are terms referring to organisms whose ranges overlap or are even identical, so that they occur together at least in some places. If these organisms are closely related (e.g. sister species), such a distribution may be the result of sympatric speciation. Etymologically, sympatry is derived from the Greek roots συν (""together"", ""with"") and πατρίς (""homeland"" or ""fatherland""). The term was invented by Poulton in 1904, who explains the derivation.Sympatric speciation is one of three traditional geographic categories for the phenomenon of speciation. Allopatric speciation is the evolution of geographically isolated populations into distinct species. In this case, divergence is facilitated by the absence of gene flow, which tends to keep populations genetically similar. Parapatric speciation is the evolution of geographically adjacent populations into distinct species. In this case, divergence occurs despite limited interbreeding where the two diverging groups come into contact. In sympatric speciation, there is no geographic constraint to interbreeding. These categories are special cases of a continuum from zero (sympatric) to complete (allopatric) spatial segregation of diverging groups.In multicellular eukaryotic organisms, sympatric speciation is thought to be an uncommon but plausible process by which genetic divergence (through reproductive isolation) of various populations from a single parent species and inhabiting the same geographic region leads to the creation of new species.In bacteria, however, the analogous process (defined as ""the origin of new bacterial species that occupy definable ecological niches"") might be more common because bacteria are less constrained by the homogenizing effects of sexual reproduction and prone to comparatively dramatic and rapid genetic change through horizontal gene transfer.