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Test your basic knowledge |
PCAT Biology Evolution
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Incude teeth - bones - etc. rock - tar pits - ice - and amber
Actual Remains
Modern Genetics
Isolation
Development of Autotrophs
2. The decimal fraction representing the presence of an allele for all members of a population that have this particular gene locus
Gene Flow
Development of New Species
Gene Frequency
Gene Pool
3. Population is very large -no mutations affect the gene pool -mating between individuals in the population is random -there is no net migration of individuals into or out of the populations -genes in the population are all equally successful at reprod
Genetic Information
Mutation (Microevolution)
Hardy-Weinberg conditions
Genetic Drift (Microevolution)
4. Stanley L. Miller demonstrated the application of UV rays - heat or a combination of these to a mixture of methane - hydrogen - ammonia - and water could result in the formation of complex molecules -after circulation of the gases for one week - he a
Darwin's Theory of Natural Selection
Overpopulation
Evidence of Organic Synthesis
Comparative Biochemistry (Physiology)
5. Populations will become sufficiently different from each other to be able to reproduce
Reproductively Isolated
Gene Pool
Genetic Information
Coacervate Droplets
6. All members of a particular species inhabiting a given locations
Eohippus
Population
Heterotroph Hypothesis
Branching Evolutionary Tree
7. Genotypes with favorable variations are selected thorugh natural selection - and the frequency of favorable genes increases with the genepool. genotypes with low adaptive values tend to disappear
Convergent Evolution
Natural Selection (Microevolution)
Coacervate Droplets
Inheritance of the Variations
8. Dissimilar species ahve been found to have evolved from a common ancestor
Modern Genetics
Development of New Species
Fossils
Evolutionary History
9. Appear to be useless but apparently had some ancestral functions
Genetic Information
Vestigial Structures
Casts
Evolution of New Species
10. Pressures in the environment select for the organism most fit to survive and reproduce -concluded that a member of a particular species that is equipped with beneficial traits - allowing it to cope effectively with the immediate environment - will pr
11. Most organisms demonstrate the same basic needs and metabolic processes -require the same nutrients and contain similar cellular organelles and energy storage forms
Gene Frequency
Molds
Phylogeny
Comparative Biochemistry (Physiology)
12. Fossil resin of trees
Speciation
Formation of Primitive Cells
Natural Selection
Amber
13. A cluster of colloidal molecules surrounded by a shell of water -tend to absorb and incorporate substances from the surrounding environment
Overpopulation
Coacervate Droplets
Gene Frequency
Hardy-Weinberg Equation
14. Missing link between reptiles (has teeth and scales) and birds (also has feathers)
Molds
Amber
Variations
Archaepteryx
15. When the gene frequencies of a population are not changing - the gene pool is stable - and population is not evolving
Population
Deme
Hardy-Weinberg Principle
Inheritance of the Variations
16. Migration of individuals between populations that will result in a loss or gain of genes - thus changing the composition of a population's gene pool
Population
Petrification
Gene Flow
Casts
17. Species multiplication is generally accompanied by migration to lessen intraspecific competition
Evolution
Isolation
Woolly Mammoth
Geographic Barriers
18. Primitive horse the size of a fox with four toes and short teeth with pointed cusps for feeding on soft leaves
Gene Pool
Convergent Evolution
Eohippus
Imprints
19. Organisms in a species have variations that give them an advantage over other members of the species -organisms may have adaptations that are advantageous for survival
Adaptive Radiation
Amber
Natural Selection
Natural Selection (Microevolution)
20. Common ancestor is found at the trunk and the modern species at the tips of the branches
Branching Evolutionary Tree
Deme
Assortive Mating (Microevolution)
Natural Selection
21. The sum total of all the alleles for any given trait in the population
Gene Pool
Natural Selection
Actual Remains
Evolutionary History
22. Real populations have unstable gene pools and migrating populations -agents of this change are natural selection - mutation - assortive mating -genetic drift - and gene flow
Microevolution
Lamarckian Evolution
Geographic Barriers
Woolly Mammoth
23. The evolution of new species - which are groups of individuals who can interbreed freely with each other but not with members of other speies
Gene Pool
Archaepteryx
Speciation
Casts
24. The emergence of a number of lineages from a single ancestral species -may diverge into a number of distinct species; the differences between them are those adaptive to a distinct lifestyle - or niche
Trilobite
Reproductively Isolated
Variations
Adaptive Radiation
25. Only changes in the DNA of the sex cells can be inherited -changes acquired during an individual's life are changes in the characteristics and organization of somatic cells
Hardy-Weinberg conditions
Inheritance of the Variations
Modern Genetics
Mutation (Microevolution)
26. Stages of development of the embryo resemble the stages in an organism's evolutionary history
Comparative Embryology
Natural Selection (Microevolution)
Gene Frequency
Speciation
27. Mates are not randoomly chosen but rather selected according to criteria such as phenotype and proximity - the relative genotype ratios will be affected and will depart from the predictions of the Hardy-Weinberg equilibrium
Assortive Mating (Microevolution)
Comparative Biochemistry (Physiology)
Geographic Barriers
Formation of Primitive Cells
28. Small local population -closely related genetically since mating between members of the same occurs more frequently =influenced by similar environmental factors and thus are subject to the same selection processes
Deme
Microevolution
Natural Selection
Imprints
29. Ancient animals similar to both reptiles and birds and dominant in the Mesozoic era
Dinosaurs
Fossils
Archaepteryx
Genetic Drift (Microevolution)
30. Developing population must compete for the necessities of life. many young must die - and the number of adults in the population generally remains constant from generation to generation
Population
Actual Remains
Competition (struggle for survival)
Evolutionary History
31. P^2+2pq+q^2=1 -p^2=frequency of TT (dominant homozygotes) -2pq=frequency of Tt (heterozygotes) -q^2=frequency of tt (recessive homozygotes)
Assortive Mating (Microevolution)
Hardy-Weinberg Equation
Natural Selection
Comparative Biochemistry (Physiology)
32. Results from the geographic isolation of a population
Genetic Information
Gene Pool
Isolation
Molds
33. First forms of life lacked the ability to synthesize their own nutrients; they required performed molecules which made them heterotrophs -energy was present in the form of heat - electricity - solar radiation - including x rays and ultraviolet light
Reproductively Isolated
Natural Selection (Microevolution)
Heterotroph Hypothesis
Evidence of Organic Synthesis
34. The closer the organisms in the evolutionary scheme - the greater the similarity of their chemical constituents
Hardy-Weinberg conditions
Coacervate Droplets
Genetic Information
Development of New Species
35. Evolutionary history and can be viewed asa branching tree
Analogous Structures
Eohippus
Inheritance of the Variations
Phylogeny
36. Discredited theory held that new organs or changes in existing ones arose becaUse of the needs of the organism
Trilobite
Lamarckian Evolution
Deme
Evolution of New Species
37. More offspring are produced than can survive
Genetic Drift (Microevolution)
Woolly Mammoth
Overpopulation
Assortive Mating (Microevolution)
38. When groups within the branches develop in similar ways when exposed to similar environments -ex: fish and dolphins
Convergent Evolution
Isolation
Casts
Mutation (Microevolution)
39. Colloidal protein molecules tend to clump together to form coacervate Droplets
Evolution
Formation of Primitive Cells
Gene Pool
Development of New Species
40. Same basic anatomical features and evolutionary origins -demonstrate similar evolutionary patterns with late divergence of form due to differences in exposure to evolutioinary forces
Homologous Structures
Fossils
Geographic Barriers
Casts
41. Primitive crustacean (relative to the lobster) - which was dominant form of the early Paleozoic era
Eohippus
Reproductively Isolated
Branching Evolutionary Tree
Trilobite
42. Offspring naturally show differences in their characteristics compared to their parents
Variations
Hardy-Weinberg Equation
Convergent Evolution
Comparative Embryology
43. Similar functions but may have different evolutionary origins and entirely different patterns of development
Analogous Structures
Modern Genetics
Hardy-Weinberg conditions
Microevolution
44. Form in hollow spaces of rocks - as the organisms within decay
Molds
Amber
Dinosaurs
Petrification
45. Over many generations of natural selection - the favorable changes eventually results in such significant changes of the gene pool that we can say a new species has evolved
Dinosaurs
Variations
Mutation (Microevolution)
Evolution of New Species
46. Change allele frequencies in a population - shifting gene equilibria -can either be favorable or detrimental for the offspring
Mutation (Microevolution)
Geographic Barriers
Speciation
Natural Selection
47. Preserved in asphalt tar pits
Casts
Woolly Mammoth
Saber-Tooth Tigers
Evolution of New Species
48. Impressions left by an organism ex: footprints
Petrification
Imprints
Competition (struggle for survival)
Isolation
49. The process in which minerals replace the cells of an organism
Saber-Tooth Tigers
Petrification
Adaptive Radiation
Natural Selection (Microevolution)
50. Change in the genetic makeup of a population with time -explained by the constant propagation of new variations in the genes of a species - some of which impart an adaptive advantage
Isolation
Woolly Mammoth
Formation of Primitive Cells
Evolution