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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. Even if the gametes of the two species meet - fertilization does not occur
If you lose one then you will still have one to back you up.
Gamete Isolation
Genotype
Allele Frequency
2. Three mRNA nucleotides that code for a specific amino acid
codon
Directional Selection
three
Homozygous
3. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.
Medel worked with _____
amino acids
Amber
Comparative Embryology
4. Group of individuals of the same species that live in the same area
Geographical Isolation
Paleozoic era
Divergent Evolution
Population
5. Natural selection that causes the frequency of a particular allele to move in one direction
Directional Selection
thymine
Homozygote
Gene Flow
6. Different alleles for a gene
Comparative anatomy
Heterozygote
Deletion
Locus
7. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome
mRNA
Sexual Selection
Post -zygotic Mechanisms
Gene Flow
8. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
RNA polymerase
tRNA
Sedimentary Rock
deoxyribose and phosphate
9. Are noncoding sequences in the gene that are removed from RNA after transcription
ribose - phosphate - and a base
Comparative embryology
introns
Insertion
10. Group of similar organisms that can breed and produce fertile offspring
amino acid
Founder effect
Species
Cenozoic era
11. A limb with five digits (fingers)
restriction enzymes - sticky ends
Insertion
Pentadactyl limb
nucleus
12. A change in the base sequence of DNA; the ultimate source of new alleles
analogous (Evolution Evidence)
Mutation
Ecological Barrier
gel electrophoresis
13. Copying the code from DNA onto mRNA
Directional Selection
Dominant
Germ
transcription
14. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees
Paleozoic era
introns
molecular evidence
Directional Selection
15. The evolutionary history/geneology of a group of organisms (a tree thingy)
Comparative Anatomy
Phylogeny
nucleotide
anticodon
16. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Convergent Evolution
Absolute dating
restriction enzyme
Substitution
17. Determined the concept of complementary base pairing
cytosine in DNA is about equal to the percentage of guanine molecules
Nucleotide
Codon
Chargaff
18. A combining of genes or characters different from what they were in the parents
Disruptive Selection
Recombination
Relative dating
Homozygote
19. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene
Evolution
cytosine in DNA is about equal to the percentage of guanine molecules
Balanced Polymorphism
Coevolution
20. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids
Testcross
Cenozoic era
Migration
replication
21. What happens during the process of translation
Chromosome mutation
Organic Evolution
Phenotype
The cell uses information from mRNA to produce proteins
22. The banding pattern of a persons DNA after being cut and run on gel is called
mRNA
DNA fingerprint
vestigial (Evolution Evidence)
Gene flow
23. 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.
3 nucleotides
Species
Homozygous
Gene
24. 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.
Dihybrid Cross
Mitosis
replication
that is complementary to a single strand of DNA
25. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Comparative Anatomy
Mutagen
Precambrian era
Gene Pool
26. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell
Germ
Allele Frequency
Genetic Equilibrium
Directional Selection
27. Form of reproductive isolation in which tere are differences in species courtship behavior
Clade
Population
Behavioral (ethological) Isolation
Gene
28. A nucleotide of RNA is made of...
Niche
Vestigial structure
Speciation
ribose - phosphate - and a base
29. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
mRNA
Homologous Structures
Speciation
30. The type of environment in which an organism or group normally lives or occurs
Mutation
embryological evidence
Habitat
Monophyletic
31. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
Dihybrid
Adenine
Isolating Mechanism
Phenotype
32. Recognize and cut DNA at specific sequences usually palindromes
nucleotide
restriction enzyme
Recessive
Hominid
33. Gradual evolution within a lineage
Macroevolution
Dominant
Stabilising
Sequential Evolution
34. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful
transcription
Sequential Evolution
Hybrid
Post -zygotic Mechanisms
35. 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.
Hybrid Inviability
Dominant
Medel worked with _____
Population
36. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz
restriction enzyme
deoxyribonucleic acid
Monohybrid
Incomplete Dominance
37. When competition causes two closely related species to become more different in regions where their ranges overlap
Balanced Polymorphism
Mutagen
deoxyribonucleic acid
Character Displacement
38. Speciation which does not involve a period of geographical separation
anticodon
Crossing over
Sympatric Speciation
Petrification
39. Predicts the possible outcome of a genetic cross.
Ecological (habitat) Isolation
amino acid
Punnett Square
body fossils
40. The gradual changes in gene frequencies in a population due to random events
Autosomes
Chargaff
Dominant
Genetic Drift
41. DNA that is coiled around proteins
Microevolution
Species
Thymine
chromatin
42. Change to a chromosome in which part of the chromosome is repeated
Duplication
Guanine
Founder Effect
transcription
43. A group of organisms of the same species occupying a given area.
Adaptation
Medel worked with _____
clinC
Population
44. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Amber
Gene mutation
Geographical Isolation
Diploid
45. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.
Chromosome mutation
Heterozygous
Deme
Hershey and Chase
46. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
Gene Pool
Gene pool
NIche Isolation
Bottle neck effect
47. The signal on a mRNA molecule that designates the end of the coding sequence is called the...
stop codon
3 nucleotides
Autosomes
mRNA
48. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.
transcription
Precambrian era
Diploid
Bottleneck Effect
49. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.
Homologous pair
analogous (Evolution Evidence)
Gene mutation
Chromosomes
50. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.
Dihybrid
Gene pool
Phenotype
Bottle neck effect