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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. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.
Cytosine
Homozygous
ribose - phosphate - and a base
Reproductive Isolation
2. Breeding organisms with specific traits in order to produce offspring with identical traits
Somatic
Balanced Polymorphism
Hershey and Chase
Artificial selection
3. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Adaptation
Bottleneck Effect
Geographical Isolation
watson and crick
4. A combining of genes or characters different from what they were in the parents
Polyploidy
Mold
Gene flow
Recombination
5. The final product of transcription is...
mRNA
restriction enzyme
Testcross
Genetic Equilibrium
6. A change or error in the DNA sequence
Environment
Genetic Drift
Stasis
mutation
7. Chromosomes are collections of many
Variation
hydrogen bonds
genes
replication
8. The enzyme that binds to the promoter region of a gene during transcription is called...
Hershey and Chase
Adaptive Radiation
RNA polymerase
3 nucleotides
9. A nucleotide of RNA is made of...
translation
Balanced Polymorphism
ribose - phosphate - and a base
The cell uses information from mRNA to produce proteins
10. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti
restriction enzyme
Genetic Drift
Meiosis
hydrogen bonds
11. Building block of a nucleic acid (DNA and RNA)
nucleotide
that is complementary to a single strand of DNA
Artificial selection
Phenotype
12. Identical alleles for a gene
Homozygote
Duplication
Comparative Embryology
Substitution
13. Independent segregation of genes during the formation of gametes
Haploid/Monoploid
Independent assortment
genes
homologous (Evolution Evidence)
14. DNA that is coiled around proteins
trace fossils
Post -zygotic Mechanisms
chromatin
true
15. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene
Test Cross
If you lose one then you will still have one to back you up.
Vestigial organs
Balanced Polymorphism
16. An ancestor that two or more descendants have in common
Insertion
trace fossils
Common Ancestor
Adaptive Radiation
17. The formation of new species as a result of evolution
Speciation
vestigial (Evolution Evidence)
Amber
deoxyribose and phosphate
18. Trait evolves overtime; NO common ancestry
analogous (Evolution Evidence)
Organic Evolution
Adaptation
Pentadactyl limb
19. 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
Adaptation
Mutation
Heterozygote
20. Copying the code from DNA onto mRNA
Allopatric Speciation
transcription
Testcross
Recessive
21. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.
tRNA
mutation
Homologous Structures
Comparative Embryology
22. 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.
The cell uses information from mRNA to produce proteins
Founder effect
Ecological (habitat) Isolation
Gene Flow
23. Is the evolutionary process whereby a population becomes better suited to its habitat
Adaptation
Comparative Anatomy
molecular evidence
Homozygous
24. Embryos of similar organisms have very similar early development indicating similar DNA at work
Comparative Embryology
Gametic
Igneous and metamorphic rock
Ecological Barrier
25. Inherited feature that tends to prevent species from interbreeding with other species
Double Helix
Isolating Mechanism
Gene frequency
Thymine
26. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related
Mutation
Divergent Evolution
Test Cross
Isolating Mechanism
27. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
that is complementary to a single strand of DNA
Population
mRNA
28. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)
mRNA
Analogous Structures (analogies)
Sexual Selection
Precambrian era
29. Building block of a protein
3 nucleotides
true
amino acid
Absolute dating
30. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual
Genome
Testcross
nucleotides
restriction enzymes - sticky ends
31. 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.
Centromere
Chromosome mutation
Speciation
Extinction
32. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.
Chromosomes
Mechanical (morphological) Isolation
Punctuated Equilibrium
Phenotype
33. The independant evolution of similar traits - starting from a similar ancestral condition
ribose - phosphate - and a base
Parallel Evolution
Chromosome mutation
Habitat
34. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other
Histone
Mesozoic era
Coevolution
Mutagen
35. The environmental factors that favour certain phenotypes
Adaptation
Coevolution
Selection pressure
Analogous structures
36. Evolution of living things - based on evidence from the past and present.
Organic Evolution
Guanine
Test Cross
clinC
37. A change in the base sequence of a gene
Gene mutation
Phyletic Gradualism (anagenesis)
Immigration
The cell uses information from mRNA to produce proteins
38. Any preserved remains of an organism from the past. Usually found in sedimentary rock.
rRNA
Fossils
Dominant
Codon
39. Even if the gametes of the two species meet - fertilization does not occur
nucleotide
Somatic
Gamete Isolation
Incomplete Dominance
40. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies
Stabilising
Mass Extinction
Hybrid Breakdown
Duplication
41. A group of organisms of the same species occupying a given area.
Organic Evolution
Crossing over
Population
Ecological (habitat) Isolation
42. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.
Relative dating
Chromosome mutation
mRNA
Adaptation
43. Three mRNA nucleotides that code for a specific amino acid
gel electrophoresis
codon
introns
Absolute dating
44. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance
Gene
Chargaff
Molecular biology
Natural Selection
45. A DNA double helix is held together in the center by between nitrogenous bases
Coevolution
Homologous structures
Homologous Structures
hydrogen bonds
46. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection
Hershey and Chase
cytosine in DNA is about equal to the percentage of guanine molecules
Endemic
Pre -zygotic Mechanisms
47. How often a particular gene occurs in the population
Molecular biology
Recombination
Gene frequency
restriction enzyme
48. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA
stop codon
Alleles
Speciation
Guanine
49. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.
Sedimentary Rock
Mitosis
Evo Devo
Variation
50. A taxon originating from and including a single common ancestor
Hominid
Cast
Directional Selection
Monophyletic