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Test your basic knowledge |
CSET Genetics And Evolution
Start Test
Study First
Subjects
:
cset
,
science
,
genetics
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. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.
Haploid/Monoploid
chromatin
Translocation
Homologous Structures
2. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.
Founder effect
Ecological Barrier
Heterozygote
replication
3. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area
Extinction
Ecological (habitat) Isolation
Genetic Equilibrium
Adaptive Radiation
4. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual
Population
Testcross
Genotype
Chromosomes
5. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry
Biogeography
cytoplasm
chromatin
Analogous Structures (analogies)
6. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.
molecular evidence
Chiasma
Mutation
mutation
7. How often a form of a gene appears in a gene pool
Allele Frequency
Translocation
mRNA
Divergent Evolution
8. How often a particular gene occurs in the population
Selection
Chiasma
Gene frequency
Deme
9. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
translation
polypeptide
Homozygote
index fossil
10. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.
Test Cross
Isolating Mechanism
index fossil
Gene Pool
11. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies
Heterozygous
watson and crick
Stabilising
polypeptide
12. Building block of a protein
Absolute dating
Heterozygous
Mold
amino acid
13. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.
Comparative embryology
GATTACA
Evolution
3 nucleotides
14. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
Homozygous
Phyletic Gradualism (anagenesis)
Adenine
watson and crick
15. The region of the chromosome that holds the two sister chromatids together during mitosis
Industrial Melanism
False RNA
Genotype
Centromere
16. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles
Test Cross
Dihybrid
Phyletic Gradualism (anagenesis)
Duplication
17. Process by which an organism is slowly turned to stone as the body is replaced by minerals.
Alleles
Macroevolution
Petrification
Thymine
18. Dna moves during electrophoresis because of...
Test Cross
Translocation
Somatic
its negative charge
19. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.
Deletion
Punctuated Equilibrium
translation
Chromosome mutation
20. Movement of organisms ro of from a population
cytosine in DNA is about equal to the percentage of guanine molecules
Reproductive Isolation
Allele Frequency
Migration
21. A DNA double helix is held together in the center by between nitrogenous bases
Adaptation
Stabilising selection
hydrogen bonds
Phyletic Gradualism (anagenesis)
22. When F1 is fully fertile but F2 has low fertility (rice - cotton)
Petrification
Ecological Barrier
Hybrid Breakdown
Homozygous
23. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor
Reproductive Isolation
Comparative embryology
Heterozygote
Fossil
24. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with
Adenine
Dominant
its negative charge
GATTACA
25. Form of reproductive isolation in which tere are differences in species courtship behavior
replication
true
Behavioral (ethological) Isolation
Sequential Evolution
26. Genes contain instructions for assembling
analogous (Evolution Evidence)
proteins
Ring Species
Dominant
27. Selection acting against the middle of a range of variation
mRNA
Test Cross
Disruptive Selection
Nucleotide
28. When zygote does not complete development or is physically weaker than normal
Molecular biology
Ecological (habitat) Isolation
Hybrid Inviability
anticodon
29. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations
Phyletic Gradualism (anagenesis)
Hershey and Chase
Deletion
Testcross
30. The comparison of the structures of different organisms
Evo Devo
Comparative anatomy
Sex Chromosomes
Punnett Square
31. Change to a chromosome in which a fragment of the chromosome is removed
Microevolution
Artificial selection
Deletion
Allele Frequency
32. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
Sedimentary Rock
Dominant
Stabilising selection
chromatin
33. Which type of Rna functions as a blue print of the genetic code
Clade
Histone
mRNA
Natural Selection
34. An ancestor that two or more descendants have in common
Gene Pool
Mate Selection
Directional Selection
Common Ancestor
35. When competition causes two closely related species to become more different in regions where their ranges overlap
Founder effect
tRNA
Character Displacement
proteins
36. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.
Stasis
Chiasma
trace fossils
RNA polymerase
37. A change or error in the DNA sequence
Immigration
The cell uses information from mRNA to produce proteins
Cenozoic era
mutation
38. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Common Ancestor
Heterozygous
Convergent Evolution
Test Cross
39. The backbone of DNA consist of...
molecular evidence
chromatin
deoxyribose and phosphate
Environment
40. The study of the past and present distribution of species.
Biogeography
Founder Effect
Isolating Mechanism
Character Displacement
41. Movement of alleles into or out of a population due to the migration of individuals to or from the population
Gametic
restriction enzyme
Alleles
Gene flow
42. Is any chromosome that is not a sex chromosome.
Independent assortment
Artificial selection
stop codon
Autosomes
43. T or F a codon consist of three nucleotides
Chargaff
RNA polymerase
Test Cross
true
44. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes
Fitness
Homologous structures
Haploid/Monoploid
Clade
45. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
Cenozoic era
deoxyribonucleic acid
NIche Isolation
body fossils
46. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Chromosomes
mRNA
trace fossils
Gene Pool
47. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell
Mitosis
Polyploidy
Germ
Variation
48. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.
cytoplasm
Comparative Anatomy
Dominant
Gene mutation
49. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character
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50. A taxon originating from and including a single common ancestor
Heterozygote
Niche
Monophyletic
mutation