Genetic bottleneck - Study guides, Study notes & Summaries

A thin-shelled crab can more readily move to escape a predator than can a thick-shelled crab, but it is more vulnerable to predators that drill through the shell. Because of these opposing forces, shell thickness for many types of crabs has remained within a narrow range over a long time. This would be an example of _____________________________ selection correct answer: stabilizing What is genetic change in a population over time? correct answer: evolution What is the mode of natural...

1. Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution ofNaCI and reweighed after 30 minutes. Tell me which egg was isotonic to the NaClsolution, which egg was hypotonic to the NaCI solution, and which egg was hypertonic tothe NaCl solution and explain how you know this. - Egg 1 = 2.5 grams hypertonic, Egg 2 = 2 grams isotonic, Egg 3 = 1.8 grams hypotonic. 5 properties of life - cellular organization, metabolism, homeostasis, growth and reproduction, heredity ...

Population Genetics Test Questions with Answers Explain how the Amish are an example of the founder effect. - Answer-The Amish population was established by a small number of individuals whose genetic diversity did not exactly match that of the distribution of genes in the general population. As a result, certain rare traits became more commonly expressed in the Amish population as it grew due to their over representation in the founding gene pool of the population. Explain how a bottleneck...

Allele - Gene for particular trait (T) (t) artificial selection - selective breeding of plants and animals to promote the occurrence of desirable traits in offspring Base pairing in DNA - Adenine, Thymine, Guanine, Cytosine Base pairing in RNA - Adenine, Uracil, Guanine, Cytosine Basic monomers and polymers of nucleic acids - bottleneck effect - A change in allele frequency following a dramatic reduction in the size of a population Central Dogma - DNA-transcription-RNA-translation-protei...

What are the key features of natural selection? -:- genetic variation over production of offspring struggle for existence Acquired vs. Inherited traits -:- Acquired- changes made to body that don't affect DNA Inherited- traits derived from DNA What was Darwin's and Wallace's contribution to science? -:- mechanism for which evolution occurs, evolution with natural selection What is the role that populations play in natural selection and evolution? 2 | P a g e | G r a d e A + |...

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 of an individual's offspring may survive. - b. P...

1. Darwin described evolution using the phrase "descent with modification." Please select the response that describes most accurately from a modern perspective what the phrase entails. A) Evolution takes a long time - it is a gradual process - and produces decent results. B) Evolution is a natural phenomenon that is ongoing, changing individuals even today. C) Closely related species are similar at the genetic, developmental, and structural levels. D) Populations living today are identi...

Selection - ANSWER-Alleles split into two groups First alleles = favored and increase in frequency Second alleles = disfavored and decrease in frequency Genetic Drift - ANSWER-Change in allele frequency due to chance Exs: Founder Effects & Genetic Bottleneck Gene Flow - ANSWER-Movement of alleles between populations Mutation - ANSWER-Creates new alleles to restore genetic diversity Around 1 in every 10,000 gametes produced in humans Speciation - ANSWER-Splitting event that created 2 or m...

biology 1108 exam 1 questions and answers 100% correct evolution - Correct Answer ️️ -decent with modification; change in in genetic composition of a population from generation to generation fossils - Correct Answer ️️ -the remains or traces of organisms from the past strata (stratum= singular) - Correct Answer ️️ -superimposed layers of rock paleontology - Correct Answer ️️ -study of fossils- developed by Cuvier adaptations - Correct Answer ️️ -inherited characteristi...

BIO 1M03 Comprehensive Exam Questions and Answers with Complete Solution Graded (A+) 1. Darwin described evolution using the phrase "descent with modification." Please select the response that describes most accurately from a modern perspective what the phrase entails. A) Evolution takes a long time - it is a gradual process - and produces decent results. B) Evolution is a natural phenomenon that is ongoing, changing individuals even today. C) Closely related species are similar at the...