Vestigial traits - Study guides, Class notes & Summaries

Organism - A living entity made up of one or more cells Theory - An explanation for a very general class of phenomena or observations Cell Theory - All organisms are made of cells and all cells come from preexisting cells Null Hypothesis - Specifies what we should observe when the hypothesis being tested isn't correct Control Group - A group that checks for other factors which are not being tested Two components of scientific theories - Pattern and process Population - Individuals of the ...

BIO 117 Exam 1 Questions and Answers 100% Pass What is an adaptation? - Correct Answer ️️ -a trait that improves the fitness of its bearer, compared with individuals without the trait How can biological fitness be estimated? - Correct Answer ️️ -Count the number of healthy, fertile offspring produced by different individuals in a population. All of the following are true for natural selection EXCEPT: - Variation exists in populations (all individuals are NOT the same). -Characteri...

Biology 1M03 Midterm1 Exam Questions And Answers characteristics of living organisms - ANS - made up of 1 or more cells - processes and carries info - reproduces/replicates - evolves and changes - uses energy cell theory - ANS all organisms are made of cells and cells from pre-existing cells Louis Pasteur experiment - ANS tested growth in flasks of broth; no growth in the flask where the top was sealed Darwin & Wallace's theory of evolution - ANS all species are re...

TLI4801 ASSIGNMENT 1 2024 DUE TO MARCH 18, 2024 Which of the following agents of evolution adapts populations to their environments? A. Mutation B. Natural selection C. Nonrandom mating D. Genetic drift - ANSWER B. Natural Selection Which of the following best describes natural selection? A. Chance variations in traits B. The differential survival and reproduction of individuals C. The processes that lead individuals to resemble their parents D. The potential for all species to incre...

TAMU Biology 112 Final Exam Questions with 100% Correct Answers Aristotle - Answer- Scala naturae Linnaeus - Answer- Binomial nomenclature Darwin - Answer- Fossils, strata Cuvier - Answer- Strata, extinction, Opposed evolution, catastrophic events caused extinction Hutton and Lyell - Answer- Gradualism, continuous geological growth, earth is OLD Lamarck - Answer- Use it or lose it, we get bigger and better, Adaptations - Answer- Inherited characteristics that enhance survival and reprod...

Contrivance - an adaptation that is a result of the modification of a previous ancestor Adaptation - A trait that helps an organism survive and reproduce Exaptation - evolutionary adaptation of an existing structure for a completely new purpose Vestigial Trait - A trait inherited from a common ancestor but is no longer used dipliod cell - cell that has 2 copies of each chromosome, one from egg, one from sperm (46) Hapliod - having a single set of unpaired chromosomes, one egg (23)...

BIO 117 Exam 1 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+ What is an adaptation? Correct Answer: a trait that improves the fitness of its bearer, compared with individuals without the trait How can biological fitness be estimated? Correct Answer: Count the number of healthy, fertile offspring produced by different individuals in a population. All of the following are true for natural selection EXCEPT: - Variation exists in populations (all individuals...

Cell theory - Answer all organisms are made of cells and all cells come from pre-existing cells Louis Pasteur - Answer designed an experiment to test if cells arose spontaneously or if they were the result of pre-existing cells Evolution - Answer postulates that (a) species are related to one another by common ancestry and (b) species can change through time from generation to generation. Natural selection - Answer process that explains how evolution occurs Fitness - Answer the abil...

Why might Pasteur's experiment be inconclusive? - The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - To ensure that results were not achieved by random chance What is the definition of a replicate? - Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of succession suggest? - As one species disap...

Natural Selection - Answer-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. Evidence of Evolution - Answer-1) Fossil Record 2) Embryology 3) Homologous Structures 4) DNA 5) Vestigial Structures common ancestor - Answer-the most recent ancestral form or species from which two different species evolved homologous structures - Answer-Structures in different species that are simila...