Gene pools Study guides, Revision notes & Summaries

In 2006, scientists discovered fossilized skeletons of an animal with several interesting features. Fossil evidence indicated that the animal not only had scales, fins, and gills, but also had lungs, a full set of ribs, and limb bones arranged to support the animal's weight. The illustration below shows what the animal, called Tiktaalik, probably looked like based on the fossil evidence.Which of the following statements best explains why the Tiktaalik fossils are an important piece of evidence ...

Why is the scientific method bad? - Answer-It is oversimplified, it implies that an experiment can answer a research question. Science isn't linear. It implies science is an independent effort, no creativity or imagination, and it ignores technology and society What is a theory? - Answer-Theories are broad explanations. They are supported by lines o evidence, with no contradictory evidence. Therefore the evolutionary theory isn't just a "theory" Why don't community analysis and feedbac...

What is microevolution? - The change in allele frequencies that occurs over time within a population. What is macroevolution? - Major evolutionary changes over time, the origin of new types of organisms from previously existing, but different, ancestral types. What is a species? - A group of populations whose members possess similar anatomical characteristics and have the ability to interbreed. What is allopatric speciation? - The formation of a new species in populations that are geographi...

Campbell Biology 8th Ed Test Bank chapter 24, 26-31 Exam Questions and Answers 100% Verified and Updated 1) Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. III. The biological species is the largest unit of population in which successful reproduction is possible. A) I only B) II only ...

Biology 30 Alberta: Population and Community Dynamics Questions and Answers Already Passed How does mutation lead to gene pools changing? - Answer alleles mutate into another form; important for variation How does natural selection lead to gene pools changing? - Answer not all individuals have ability to produce offspring; "survival of the fittest" How does non-random mating lead to gene pools changing? - Answer mating based on proximity and preference; not all individuals have equal ch...

What is microevolution? - ️️The change in allele frequencies that occurs over time within a population. What is macroevolution? - ️️Major evolutionary changes over time, the origin of new types of organisms from previously existing, but different, ancestral types. What is a species? - ️️A group of populations whose members possess similar anatomical characteristics and have the ability to interbreed. What is allopatric speciation? - ️️The formation of a new species in po...

Officer Tom stops Kathy because she looks like a criminal to him, and after a pat down finds marijuana in her pocket. He then uses the drugs to justify obtaining a warrant to search her home for more drugs. The search uncovers 8 kilos of cocaine. What evidence, if any, would be admissible at trial? - Neither the marijuana nor the cocaine would be admissible at trial. From least to most serious, crimes are classified as follows: - infractions/misdemeanors/felonies Which of the following is n...

AQA A-Level Biology Questions with Answers | Graded A Glucose is absorbed from the lumen of the small intestine into epithelial cells. Explain how the transport of sodium ions is involved in the absorption of glucose by epithelial cells. (5 marks) [Unit 1, June 16] - Correct Answer ️️ -1. Na+ ions leave epithelial cell and enter blood; 2. (Transport out is by) active transport / pump / via carrier protein using ATP; 3. So, Na+ conc. in cell is lower than in lumen (of gut); 4. Sodium/N...

EVE 100 Exam Study Questions With Answers | 100% Verified . You collect 1000 Drosophila from a pumpkin patch. You remove 5 females and 5 males to found a new population X, and keep the remainder at constant population size of 1000 as a control. After a few generations population X has grown to 1000 individuals, identical in size to the control population. Answer the following questions and give a brief explanation: Does population X have a higher or lower effective population size than the c...

BIO 152-- FINAL EXAM questions and answers 2023.Which of the following is not an observation or inference on which natural selection is based? a. There is heritable variation among individuals. b. Poorly adapted individuals never produce offspring. c. Species produce more offspring than the environment can support. d. Individuals whose characteristics are best suited to the environment generally leave more offspring than those whose characteristics are less well suited. e. Only a fraction...