Species and speciation Samenvattingen, Aantekeningen en Examens

What is micro-evolution? - Changes in allele frequencies within populations, often associated with adaptation, can be measured from one generation to the next "small changes" What is macro-evolution? - Major changes in the history of life, origin of new species, generates biological diversity "big changes" What is a species? - a group of populations whose members have the potential to interbreed with one another in nature to produce fertile offspring What is allopatric speciation? - ...

BIO120 TEST 2 UOFT LECTURE 9-15 RATED A+ taxonomic diversification divergence causing a change in species name Taxonomy The scientific study of how living things are classified; like the vocabulary to the grammar of systematics Carol Linnaeus "Father of Taxonomy"; established his classification of living things; famous for animal naming system of binomial nomenclature; came BEFORE Darwin sympatric within a region Allopatric across regions taxonomic (morphological) naming of s...

Macroevolution changes in a population over very long periods of time. Speciation the splitting of one species into two or more new species Biological Species Concept offers testable way to define a species that does not depend on appearance: The members of a species interbreed and have a shared gene pool, & each species is reproductively isolated from every other species. Gene flow occurs between the populations of a species, but not between pops of diff species. Biolo...

Test Bank for Evolution, Making Sense Of Life, 2nd Edition by Carl Zimmer, Prof. Douglas Emlen. Table of Content Chapter 1: The Virus and The Whale: How Scientists Study Evolution Chapter 2: The Evolution of Evolution: From Natural Philosophy to Darwin Chapter 3: What The Rocks Say: How Geology and Paleontology Reveal the History of Life Chapter 4: The Tree of Life: How Biologists Use Phylogeny to Reconstruct the Deep Past Chapter 5: Raw Material: Heritable Variation Among Individuals Chapter 6:...

NRES 101 Midterm 100% VERIFIED SOLUTIONS 2023//2024 T/F: Species diversity increases as you approach the equator - ANSWER True What are possible reasons why more species occur near the equator - ANSWER - More time without geological disruptions (e.g., glaciers) - More niches - Climatic stability - Greater biological productivity What is speciation - ANSWER The formation of 2 species from 1 ancestral species What factors lead to speciation - ANSWER - natural selection - sexual selec...

ENWC201 Exam 1 UD Latest Update 100% Verified Additive mortality then a tornado rips through; 50% deer die regardless of other factors Age distribution number of individuals of each age in a population reproductive capacity differs at each age class mortality differs at each age class Allopatric Speciation existing in different places Areas of Highest Loss The Amazon basin and southeast asia(deforestation and expansion of crops) Oceanic(overfishing and pollution) Beha...

Biodiversity is measurable at three levels: - ANSWER Genetic level= variability within species Species level= variability among species Ecosystem level= variability among ecosystems Three domains of life: - ANSWER Archaea, eukarya and bacteria Population - ANSWER interbreeding group of individuals. Populations exchange genes Purpose variability within a population - ANSWER 1. some genetic variants have advantages over others 2. natural selection can act on variation What if popula...

Monophyletic Group - Answer-includes all the descendants of a common ancestor, and its considered a natural grouping of organisms based on a shared ancestry. Paraphyletic Group - Answer-some (not all) of descendants of a common ancestor Polyphyletic Group - Answer-organisms from distinct lineages based on shared characters, but no common ancestor Homologies - Answer-similarities based on shared ancestry Analogies - Answer-similarities based on independent adaptations Synapomorphies - Answ...

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...

species - evolutionarily independent population or group of populations synapomorphy - a trait that is found in certain groups of organisms and their common ancestor, but is missing in more distant ancestors; identifies monophyletic groups; homologous traits that can be identified at the genetic, developmental, or structural level biological species concept - reproductive isolation between populations (they don't breed and don't produce viable, fertile offspring) - reproductive isolation...