Think about the ways we define/identify a species. What would the least precise way to determine a living species (so not extinct)? Ogroups of organisms that look alike O groups of organisms that are geographically separated for a significant period of time such that they become distinct genetically separate populations with different genetic markers groups of potentially interbreeding populations with are reproductively isolated from others

Think about the ways we define/identify a species. What would the least precise way to determine a living species (so not extinct)? Ogroups of organisms that look alike O groups of organisms that are geographically separated for a significant period of time such that they become distinct genetically separate populations with different genetic markers groups of potentially interbreeding populations with are reproductively isolated from others

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 8SQ

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For which of these groups is the biological species concept not useful for determining species? Mark all that apply. O Separate recognized species that form hybrids (many plant species) Nonsexual groups Extinct groups (fossils) O Species with many remote, isolated populations (vernal pools) O Two sympatric species that do not form hybrids O An introduced species that forms a hydrid with a native species
Which of the following is NOT a limitation of the current biological species concept? O Some scientists say that we should use DNA similarities to determine species. O It is difficult to apply to asexually reproducing organisms. O It is difficult to apply to species that are extinct. Some organisms can breed in captivity but would not breed in nature. Some organisms are obviously separate species but are sometimes able to mate and
do taxa E F G by themselves form a monophyletic group (clade)? why or why not? Trait 2 E Trait 1 Ancestor 3 Ancestor 1 (Trait 2 not present) Trait 1 Trait 2 Trait 1 Ancestor 2 Trait 1
There are a lot of pros and cons to using the biological concept. It is only one out of several types of concepts used to define a species. What would be the main criterion used for determining / differentiating between species? gene flow O niche differences O geographical isolation
Within a population of sunflowers, a new individual has a novel dominant mutation that causes it to flower 4 months earlier than the rest of the population. That sunflower survives and successfully self-fertilizes, leading over time to a novel population that evolves larger leaves and smaller flowers. This new population does not interbreed with the original population, although they are found in the same areas. This is an example of Allopolyploid speciation O Behavioral isolation O Allopatric speciation O Sympatric speciation O Adaptive radiation
Which reproductive barrier is most likely to prevent interbreeding between a polyploid species and its diploid sister species? Behavioral isolation: the two species will not recognize each other as mates O Gametic isolation: sperm and egg with different chromosome numbers cannot complete fertilization Hybrid infertility: differences in chromosome numbers will result in infertile hybrids O Mechanical isolation: differences in reproductive structures will prevent interbreeding O Temporal isolation: the two species will not reproduce at the same time of year
A reasonable definition for a species is: O A distinct kind of animal. O A group of living things with functionally similar traits, for example, all creatures that can fly. O A group of living things with taxonomically similar traits. O A group of taxonomically similar living things in which all healthy members can interbreed and produce fertile offspring. QUESTION 8 If microevolution is any change in the gene pool of a breeding population, then macroevolution is: O A change in the genetic makeup of group that eventually results in the development of a new species. O The mass exctinction of old species to make way for new. O Changes in the physical environment at large. O When microevolution happens on a large scale. * QUESTION 9 What is the primary cause of speciation? O Extinction. O Overpopulation. O Environmental change. O When a breeding population becomes reproductively isolated from its ancestral population, for a long enough time, in a different enough environment, that it…
A scientist is attempting to a cladogram that shows the evolutionary closeness of three organisms in relation to humansAfter doing DNA analysis, they that the organisms share the following percentages of DNA Organism A and humans share 85% of their DNA Organismn and humans share 80% of their DNA Organism and humans share 90% of their DNA Based on informationwhich order should they go on the cladogram ( related to most related ?
Indicate the order in which the following steps would take place to result in Parapatric Speciation [enter 1 for the first step, 2 for the second, etc; write only the number -- no words, no spaces] Something happens so that the environment is different in one part of the range relative to the other, even though the populations are still contiguous. As they adapt to their specific environments, the fitness of any hybrid formed is reduced. The populations adapt to their environment in the part of the range where they live. Interbreeding populations connected via gene flow occur across a range. Reproductive isolating mechanisms are selected for so that less fit hybrids are not formed. Two species now exist.
Answer questions 7 and 10 and don't copy off the other persons work, question 7 says to not include the outgroups, look How many nodes (i.e., common ancestors are there in your phylogeny? Do not include the outgroup since this is only used to assess character states. don't include the outgroup and than answer that and than answer question 10 normally because question 10 hasn't been answered DONT copy someone else's work
Directions: Examine the chart below: 0 means the trait is absent, 1 means the trait is present. Notice that a couple of things are different from the previous charts. Firstly, the derived traits and species name have switched axis. Secondly, you will see that in this chart there are derived traits that have evolved independently in different organisms. Use the principle of maximum parsimony to make a draft of the cladogram. The theory of maximum parsimony states that the simplest explanation consistent with the data should be examined first. The most parsimonious trees require the fewest evolutionary events. Construct your own cladogram using the information from the chart as a guide. Derived Trait 1 2 3 4 6. 7 8 Lamprey Salmon 1 1 1 Tuna 1 1 1 Mackerel 1 Trout 1 1 1 1 Halibut 1 1 1 1 1 1 1-
Match the description with the correct term.A. the idea that inherent variation in a population allows for certain traits to be selected and carried on to future generations of the population experiencing an environmental pressureB.organisms that do not have a common ancestry but develop body parts that perform the same functionC. a model suggesting the gradual change of a species to form distinct speciesD. the idea that all living things on Earth share a common ancestorE. a common ancestor adapts and results in various speciesF. two populations become reproductively isolated (can no longer reproduce successfully)1.speciation 2. adaptive radiation 3. analogous structures 4.theory of evolution 5. gradualism 6. theory of natural selection