Phenotypic variation - Study guides, Class notes & Summaries

Requirements for Hardy-Weinberg equilibrium - ️️1. No mutations 2. Large population so random chance does not cause allele frequency changes 3. No migration in or out of the population 4. Random mating happens 5. No phenotypic advantage is present Analogous structures - ️️Parts that have the same function, but developed from different lineages Genetic bottleneck - ️️Losing genetic or phenotypic diversity due to genetic drift Gene flow - ️️Movement of new alleles from one ...

Adaptation word used to describe a trait or character. Describes an evolutionary process - a process of phenotypic adjustment within individuals - infers that increasingly good fit between organism and environment is brought by the process acting on heritable genetic or epigenetic changes Acclimation phenotypic changes Adaptive trait distinct variant of a phenotype that enhances fitness that arose historically as a resolute of natural selection for its current biological role - it is inherited...

Lamarck's ideas about_____ have been soundly rejected. - How adaptation occurs Darwin's mechanism for the cause of evolution was based upon... - Characteristics that enhance survival are heritable &Existing variation among individuals What accounts for broad, continuous variation of a particular phenotype within a population. - Multiple genes Select the true statement from those listed below. The evolution of larger genome size is expanded by gene duplication events When a point mutati...

evolution - change in gene frequency in a population over time mechanism - a way for change to occur natural selection - a process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits - proposed mechanism for evolutionary change variation is determined by - the environment heredity - passing of traits from parents to offspring reproductive success - successfully passing genes to next generation...

UCLA Anthro 1: Final Study Guide Questions With Verified Solutions Define theories, hypotheses, assumptions, data, & inferences. - ANS Theories: explains CAUSAL relationships at an ABSTRACT level Hypothesis: deduced from theory (more specific, 2 variables) assumptions: conclusion without evidence data: information of any type inference: conclusion from evidence Darwin's Postulates - ANS 1) Population is infinite, but resources are not 2) Population varies 3) Heritability (v...

SSI Complete Exam Questions With Answers Graded A+ The majority of genetic variation is ... within a race category (e.g., within the "White" category) If genetic differences are clinal, then it means that ... there are gradual phenotypic differences among people that correspond to geography and climate A person in China, a person in Nigeria, and a person in Peru are, genetically speaking, the same The genes associated with the physical traits that typically mark race (e.g., ...

BIO 104 Exam 1 Questions Exam With Solutions 100% Correct Hypothesis A suggested explanation thatmight be true an is subject totesting by further observations Requirements for Evolution by Natural Selection Phenotypic variation must exist in a population, lead to differences among individuals in lifetime reproductive success, and be genetically transmissible to the nest generation Darwinian Fitness Most reproductive Artificial Selection Selective breeding of plants and animals to pro...

NIU Bios 209 Final Exam-King Questions with Verified Solutions **Biology and Ecology** What term describes the characteristics of a system that arise from the interactions among its components, but cannot be predicted by studying the components in isolation? Emergent properties. What is a continuous piece of DNA within a cell called, which can exist as a line or loop/circle? A. Mitochondrial DNA B. Chromosome C. Nucleotide D. Gene E. DNA helix B. Chromosome Defin...

Gene pool all of the alleles of all the genes in a certain population Hardy-weinberg principle genotype frequencies in a large population do not change from generation to generation in the absence of evolutionary processes Claims of hardy-weinberg principle (1) if the frequencies of alleles a1 and a2 in a population are given by p and q, then the frequencies of genotypes a1a1, a1a2, a2a2 will be given by p^2, 2pq, and q^2 for generation after generation. (2) when alleles are transmitted via me...

One definition of evolution is that evolution is "descent with modification". What does "modification" refer to in this definition? (1) Mutation and (2) Sexual Mixing What is the only statement that is NOT true about the genetic relatedness of life on Earth? Gorillas are the closest living relative to humans All but one feature listed below are shared between family trees and phylogenetic trees. Represent populations on each branch Which of the following is the only TRUE statement abou...