Vestigial traits - Study guides, Class notes & Summaries

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...

Honors Biology – Evolution Questions and Answers Graded A+ What is the significance of genetic drift in small populations? Genetic drift causes random changes in allele frequencies, which can significantly impact small populations. How does the concept of speciation relate to evolution? Speciation is the process by which new species arise from existing ones, contributing to evolutionary diversity. What role does sexual selection play in evolution? Sexual selection favors tr...

IB Biology: Evolution Questions and Answers Already Passed What is a theory? A comprehensive explanation of some aspect of nature (vs a hypothesis, which is just a prediction as to the result of an experiment). What were some ideas from Darwin's time that influenced his work? French naturalist Buffon in the mid-1700s studied fossils and said the Earth must be older than previously assumed; Lamarck in the early 1800s proposed that life changes over time. Define acquired vs heritab...

Biology 1M03 Final Exam Practice Questions And Answers Interpret this statement: Extinct fossil species are typically succeeded by similar living species - ANS Extinct and living forms represent ancestors and descendants Which is an example of developmental homology a) gene content b) similar organismal structures c)vestigial traits d) similar embryonic traits - ANS d) Which is not one of Darwin's 4 Postulates: a) Individuals in a population vary in their traits b) These...

Bio 117 Exam 1 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+ Evolution Correct Answer: A change in a population overtime *change = usually a slight modification of traits Vestigial Trait Correct Answer: A trait or characteristic that does not function well or at all How can vestigial traits be used to show change in organisms over time? Correct Answer: They are a trait present in ancestors but no longer useful in living organism. Examples: tail bones in hu...

McMaster Bio 1M03: Exam 2024/2025 Questions with all the correct Answers ;( Real actual exam) Why might Pasteur's experiment be inconclusive? - Correct Answer 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? - Correct Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Correc...

BIO 117 Exam 1 Questions and Answers Already Passed What is an adaptation? a trait that improves the fitness of its bearer, compared with individuals without the trait How can biological fitness be estimated? 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). -Characteristics acquired by individuals over the cours...

NR 602 Exam 1 Questions and Answers Already Passed What was the primary cause behind Darwin's finches developing into different subspecies? (a) Droughts (b) Competition for resources (c) Different microclimates of each island (d) Selective mating (e) None of the above C) Each kind of finch has a different beak because natural selection has selected for the beak that optimizes the most abundant food source in the particular climate that the specific birds live in. Because each of ...

Darwin and Wallace's Two Big Ideas Correct Answer-1.) descent with modification 2.) natural selection Special Creation Correct Answer--1700s and early 1800s POPULAR belief that species are FIXED entities that neither change nor give rise to descendant species Darwin and Wallace's Observations Correct Answer--fossils of extinct animals are found where similar animals live today (armadillo and Glyptodon) -Islands near each other have similar but distinct animals living on them -some sp...

AP Biology Exam Questions and Answers Graded A+ What are the 2 theories of evolution? Explain each Gradualism- geologic changes result from slow, gradual, continuous process Punctuated Equilibrium- Long period of stasis punctuated by short bursts of significant change. What was Lamarck's theory and why was it wrong? Lamarck = Inheritance of Acquired characteristics- traits acquired during lifetime could be passed on What is natural selection Comptetition for limited resources re...