Homology - Study guides, Class notes & Summaries

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...

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 ...

CMMB 403 final exam Question and answers already passed CMMB 403 final exam what does CRISPR use in order to generate changes in genome? is CRISPR forward or reverse genetics? - correct answer - nuclease - 20 nucleotide RNA sequence to target specific sites in the genome - reverse genetics what is the role of Cas9 in CRISPR - correct answer endonuclease that catalyzes double stranded breaks what are the two repair paths cells can use to repair double stranded breaks from CRISPR-Ca...

What are the first three steps for starting a project? - ANSWER 1 ) Choose 2) Read literature 3) Obtain DNA sequence Once you obtain the DNA sequence in the beginning of a project, BLAST will allow what? - ANSWER "Basic Local Alignment Search Tool" - To search for homology (duplication events) - Can predict protein, molecular weight, pI, and extinction coefficient - Predict the secondary/tertiary structure, transmembrane helices, ubiquitation sites, etc

Adaptation CORRECT ANSWER Inherited characteristic of an organism that enhances its survival and reproduction in specific environments Natural selection CORRECT ANSWER A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than are organisms with other characteristics. Artificial selection CORRECT ANSWER The selective breeding of domesticated plants and animals to encourage the occurrence of desirable traits Observations of change, f...

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...

CMMB 403 final Exam New Year 2024| Questions and Answers| Certified Quality Graded A+ what does CRISPR use in order to generate changes in genome? is CRISPR forward or reverse genetics? - nuclease - 20 nucleotide RNA sequence to target specific sites in the genome - reverse genetics what is the role of Cas9 in CRISPR endonuclease that catalyzes double stranded breaks what are the two repair paths cells can use to repair double stranded breaks from CRISPR-Cas9 1. non-homologous end jo...

Bio 120 - Exam 1 Questions with Correct Answers Graded A+ Synapomorphy A shared derived character or trait state that distinguishes a clade from the other organisms. Analagous Having characteristics that are similar because of convergent evolution, not homology. Homologous Similarity in characteristics resulting from a shared ancestry. Porifera Sponges No true tissues Mostly marine, aquatic Asymmetric 2 germ layers (endoderm and ectoderm) No coelom Sessile Sessile Attached direc...

What are Chordate general characteristics? - ANSWER Eucoelomate Bilateral Symmetry Deuterostomes Chordate functional homologies (4) - ANSWER Notochord Pharyngeal gill slits Dorsal, hollow, single nerve cord Post-anal tail Homology in chordates. A flexible rod running posteriorly from the head to the tail. It acts as an attachment site for muscles and a support structure that can bend. It consists of a large fluid-filled cells encased in a stiff connective tissue. Its present in primit...