Q: How does competition influence natural selection? Is the presence of competitors a selective force?
A: Competition is of two types - intraspecific and interspecific. intraspecific competition occurs…
Q: Explain how it is possible for evolution to result in unity amongdifferent species yet also produce…
A: Evolution refers to the change in the species characteristics over several generations. Evolution…
Q: If natural selection has no foresight,how can it explain features that seem to prepare organisms for…
A: The theory of natural selection accounts for the adaptations of organisms. It tells us about all the…
Q: List three species concepts, and explain the mainrequirements of each.
A: BASIC INFORMATION EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…
Q: describe the two general steps that are required for a new species to arise?
A: A mechanism by which new species arise is called speciation. It is an evolutionary mechanism. The…
Q: Ernst Mayr defined a biological species as a population whosemembers can exchange genetic material…
A: Introduction Gene transfer is referred to the process in which the DNA (Deoxyribose Nucleic Acid)…
Q: If a species of ground finch with variation in beak size suddenly had to all compete for large hard…
A: Natural selection is the basis of evolution that was proposed by Charles Darwin. The process of…
Q: Explain gene flow as a force of evolution (how does gene flow contribute to biological change?)
A: Gene flow is defined as vertical flow or exchange of genes in different populations of same species.
Q: What causes for a species to evolve?
A: The biosphere comprises a wide variety of organisms that are classified into certain taxonomic…
Q: What factors determine a species?
A: Species It is defined as the largest group of organisms in which two individuals are capable of…
Q: What are the present human biological diversity?
A:
Q: Explain the hypothesis of the evolutionary relationships between species ?
A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…
Q: The more DNA and protein sequences two organisms share, the ________________ closely related they…
A: Evolution is a theory which represents the development of new organisms from pre-existing forms and…
Q: Genetic variation within a species is mostly like the result of??
A: Genetic variation means variation occurs in the DNA sequence of the genome. It plays an important…
Q: If an altered structure, such as the long neck of the giraffe, is advantageous, why don’t all…
A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…
Q: In 350 words, distinguish between sympatric, allopatric and parapatric speciation.
A: Species refers to group of organisms that can interbreed among themselves to give rise to fertile…
Q: What would you say is the driving force behind changes in populations of organisms across periods of…
A: Natural selection is a driving force in evolution and that can generate populations that are better…
Q: What is this called, when two species look alike but are not related via evolutionary history?
A: Evolution is orderly change from one form to another. Evolution is explained by Charles Darwin.
Q: Species 1 Species 2 Species 1 Species 2 Gene A' Gene A" Gene B' Gene B" node 1 node 3 node 2
A: The answer is given below.
Q: briefly explain why there is species variation?
A: Variation is the change in any amount, level, or condition. Genetic variation occurs in the genetic…
Q: Are differences in migratory orientationwithin a species genetically determined?
A: Migration is a normal and significant behavioral adaptation for sustainability that has evolved in…
Q: How does Darwin’s Finches support the argument that genetic variation increases the survival rate of…
A: Darwin's Finches refers to the group of small birds that used to live on the Galapagos island where…
Q: metapopulation dynamics?
A: Answer: Metapopulation. A population broken into sets of subpopulations held together by dispersal…
Q: Closely related species are grouped together into (singular, ). By…
A: Closely related species are grouped together into genera (singular, genus).
Q: What is our learnings about the Origin of Species?
A: origin of species was formulated by the darwin.
Q: According to the land bridge theory, why may people have crossed into North America from Siberia?
A: Landbridge theory, states that early animals and people traveled from Siberia to Alaska across a…
Q: Why do some species survive while others go extinct? Explain
A: In a due course of time, it is believe that our ancestral species that lived in different parts of…
Q: In an evolutionary perspective, what would happen to the population of angry clip birds after 1000…
A: Variation is vital for species survival because it allows the organism to overcome adversity.…
Q: Enviroment (space-time concept) and genetics are inseparable, explain?
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: How does genetic information provides evidence for evolution? Give species examples
A: Genetic information can tell a lot about our ancestral history or background. Here we will know…
Q: Define species concept, and give examples.
A: All living organisms are classified based on their internal and external features. The science of…
Q: According to natural selection, which organisms are most likely to survive?
A: Evolution is the process by which complex organisms develop from simple ones .
Q: When a Golden Snail was introduced to Black Native Snails, how would it impact the genetic diversity…
A: Snails are moist, slimy living organisms that belong to Mollusca. They have a tubular foot and a…
Q: EVOLUTION CONNECTION Explain the biological basis forassigning all human populations to a single…
A: Evolution is defined as the change in the characteristics of a species over several generations,…
Q: Why would a population with no genetic variation and unlimited resources never be expected to…
A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…
Q: What is an evolutionary tree? Is there a precise evolutionary tree that explains the emergence and…
A: The evolutionary tree is a visual and schematic depiction of evolutionary connections between living…
Q: Ho can organisms. in the same environment have different selection pressures?
A: Evolution is a continuous transition of living forms, beginning with the basic forms of the past and…
Q: Once a mutualistic relationship evolves between two species, will natural selection and co-evolution…
A: Symbiosis is the process where the organisms are dependent on each other. The interactions can be…
Q: How can researchers test the hypothesis that clinal variation among populations of a particular…
A: A gene is a functional unit on a chromosome that is passed down from parents to offspring in order…
Q: Try to outline a scenario explaining the evolution of the three species shown in panel g. Use…
A: Transition from A to B is Genetic Drift. New characteristics apppeared not in response to survival…
Q: 1a. Discuss the role of Gene Flow in evolution 1b. Explain how Natural Selection operates to bring…
A: Evolution refers to the change of characteristics of a population that can be inherited from one…
Q: Why All Species Are Unique?
A: A species is a group of living organisms consisting of similar individuals capable of exchanging…
Q: If American cacti and African spurges were closely related, could they be used to show that…
A: Introduction Evolution is the process of a species' features changing over numerous generations…
Q: Explain the mechanisms during fertilizatio that ensures species specificity
A: Fertilization is the process of a sperm fusing with an egg cell, which is significantly larger and…
Q: Define about migration, or gene flow, ?
A: Genetics is the branch of biology that deals with the study of genes, their variation, and heredity…
Q: What types of gene changes are most associated with the evolution of new anatomical features in a…
A: A specific sequence of nucleotides in DNA or RNA that is usually found on a chromosome and serves as…
Q: What types of observational evidence point to the common ancestry of all living organisms?
A: In evolutionary biology, common descent is the condition where one or more species are descendants…
The largest unit within which gene flow can
readily occur is a
(A) population.
(B) species.
(C) genus.
(D) hybrid
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- What factors determine a species?Why might captive-breeding programs that reintroduce species into natural environments fail?Once a mutualistic relationship evolves between two species, will natural selection and co-evolution cause the two species to become continuously more dependent on each other? Or is it possible for one to end the mutualism? Describe.
- Q1: Within which category are individuals most closely related to one another? Q2: Within which category are individual species most distantly related? Q3: Are individual species more closely related within the same order or within the same family?What is our learnings about the Origin of Species?One way to prevent a small population of a plant or animal species from going extinct is to deliberately introduce some individuals from a large population of the same species into the smaller population. In terms of the evolutionary mechanisms discussed in this chapter, what are the potential benefits and drawbacks of transferring individuals from one population to another? Do you think biologists and concerned citizens should take such actions?
- describe the two general steps that are required for a new species to arise?Why is variation amongst individuals of the same species important in ensuring species survival? How is variation generated? CYTOGENETICSUnder what conditions should natural selection favor production of many offspring versus the production of a few well-provisioned offspring?
- Do you expect that natural selection acting within a species would increase the population size of the species? Do you expect that it would increase the rate at which new species arise, thus increasing the number of species?What is meant by Gene pool?n which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive data