Stabilizing selection - Study guides, Class notes & Summaries

Ecology Science Olympiad with Certified Solutions Succession progressive replacement of one community by another until a stable climax is established 2 types of succession Primary: succession of vegetation from a barren desert or water to a climax community Secondary: Biotic communities develop in a place where the natural vegetation is gone but soil is present Climax Community community of vegetation (plants, trees, fungi, etc) that have reached a steady state Selection a...

bio 117 Exam 1 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+ evolution Correct Answer: a change in a population over time Natural selection Correct Answer: the process by which populations change over time What is necessary for natural selection to occur? Correct Answer: traits within a population vary -some individuals leave more offspring than others (fitness) Mechanisms of evolutionary change Correct Answer: Natural selection, genetic drift, gene flow...

bio 1108 exam 1 (herrick) questions and answers 100% pass what are two factors that contribute to phenotype? - Correct Answer ️️ -genotype and environment species - Correct Answer ️️ -individuals that are able to exchange genetic material gene pool - Correct Answer ️️ -all alleles present in individuals of that species populations - Correct Answer ️️ -interbreeding groups of organisms of the same species living in the same geographical area what are two main sources that l...

what are two factors that contribute to phenotype? - Answer-genotype and environment species - Answer-individuals that are able to exchange genetic material gene pool - Answer-all alleles present in individuals of that species populations - Answer-interbreeding groups of organisms of the same species living in the same geographical area what are two main sources that lead to genetic variation? - Answer-mutation and recombination what can somatic mutations lead to? - Answer-cancer, disease ...

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...

D ≈ 0.49 A population of butterflies comes in three color morphs; orange (A1A1), black (A2A2), or orange with black spots (A1A2). You find that the frequency of orange butterflies is 0.49, and the frequency of black butterflies is 0.36. You do not know if the population is currently in HWE. What would you expect the frequency of spotted butterflies to be, if the population is under Hardy-Weinberg equilibrium? A ≈ 0.42 B ≈ 0.15 C ≈ 0.84 D ≈ 0.49 B. Migration is low and the populat...

ADVANCED PLACEMENT (AP) BIOLOGY: Identify Evolutionary Change Mechanisms 40 Questions Correctly Answered | 100% Rated Question 1 What conclusion did Darwin draw from the finches he observed at the Galapagos Islands? Possible Answers: Organisms will evolve in order to fill unoccupied niches in their environment. Finches will all live in the same area of a tree, regardless of species type. Birds reserve a herd mentality, and will aspire to remain similar in appearance to one another...

Biology 1108 Unit 1 EXAM Questions and Answers 100% Pass The term "n" refers to the size of a population, that is, the number of individuals in that population. In general, in a sample of n individuals, the frequency of an allele is: A)the number of occurrences of the allele. B)the number of occurrences of the allele divided by n. C)the actual value of n D)the number of occurrences of the allele divided by twice the number of individuals in the sample (2n). E)twice the number of occur...

VA-BC Study Guide What size needle do you need for blood? How do you know if you cannulated an artery? You have a 16 year old patient and the PICC appears to be on the left side, how do you determine its in the vein and not artery? - 20-24 Bright red blood Preform ABG Patient needs one dose of vanco what would you recommend? How do you determine IO position placement? - Midline across abdomen If patient states NO IV what do you? What body position do you do for PICC removal? Wha...