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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. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.
Variation
Absolute dating
Pentadactyl limb
Immigration
2. 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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3. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.
tRNA
Amber
Locus
Test Cross
4. What is one benefit for having two strands of DNA?
anticodon
Centromere
If you lose one then you will still have one to back you up.
Parallel Evolution
5. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles
Cytosine
watson and crick
Chargaff
Dihybrid
6. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)
Precambrian era
Isolating Mechanism
Phenotype
Paleozoic era
7. 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.
Testcross
restriction enzyme
Chromosome mutation
Semi - conservative replication
8. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other
Geologic Evolution
Translocation
Ring Species
Coevolution
9. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz
Nucleotide
Mechanical (morphological) Isolation
Selection pressure
Incomplete Dominance
10. Which structure contains anticodons
trace fossils
Deletion
Mass Extinction
tRNA
11. Innate trait; shared ancestry
watson and crick
mRNA
homologous (Evolution Evidence)
Endemic
12. Speciation preceded by a period of geographical isolation
Allopatric Speciation
Geographical Isolation
Alleles
Population
13. Change in allele frequencies as a result of the migration of a small subgroup of a population
RNA polymerase
transcription
Founder Effect
Insertion
14. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Gene Pool
Immigration
Heterozygous
Behavioral (ethological) Isolation
15. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)
Histone
Isolating Mechanism
Genetic Equilibrium
Dominant
16. 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
Geographical Isolation
embryological evidence
Analogous Structures (analogies)
Hybrid Infertility
17. A mutation in which one nucleotide is replaced by another nucleotide
amino acid
Guanine
Substitution
Comparative Anatomy
18. 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
Mutation
Analogous Features
thymine
19. The structure on a tRNA molecule that allows it interact with an mRNA molecule
anticodon
Population
tRNA
Mutation
20. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.
nucleotides
Deme
Cast
Allele
21. 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
Natural Selection
Molecular biology
proteins
Sympatric Speciation
22. Embryos of similar organisms have very similar early development indicating similar DNA at work
Nucleotide
Comparative Embryology
Gamete Isolation
analogous (Evolution Evidence)
23. T or F a codon consist of three nucleotides
If you lose one then you will still have one to back you up.
Test Cross
Sedimentary Rock
true
24. Mutation where an extra base is added
Histone
Insertion
Mutation
Gene frequency
25. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
Niche
Analogous Features
Genome
Sedimentary Rock
26. 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
vestigial (Evolution Evidence)
Ecological (habitat) Isolation
Natural Selection
Gene Pool
27. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.
molecular evidence
body fossils
Hybrid
Precambrian era
28. T or F A cloned organism has the same proteins as another organism
Bottleneck Effect
False genes
Phenotype
Autosomes
29. Which type of Rna functions as a blue print of the genetic code
Sub - species
mRNA
Polyploidy
Founder effect
30. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA
Founder effect
Cytosine
Adaptation
Genotype
31. Selection acting against the middle of a range of variation
Adaptive Radiation
Heritable variation
Disruptive Selection
Comparative embryology
32. 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
Homologous pair
Heritable variation
Paleozoic era
Gene Pool
33. Hybrid is sterile so biologically unfit
thymine
Hybrid Infertility
Directional Selection
Mendel's Principle of Segregation
34. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation
Fitness
Migration
Heritable variation
Sub - species
35. 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.
Sympatric Speciation
RNA polymerase
Homologous pair
thymine
36. A change or error in the DNA sequence
mutation
deoxyribose and phosphate
Founder Effect
tRNA
37. Evolution of living things - based on evidence from the past and present.
Stabilising
Organic Evolution
The cell uses information from mRNA to produce proteins
If you lose one then you will still have one to back you up.
38. Condition in which an organism has extra sets of chromosomes
Analogous Structures (analogies)
Polyploidy
Gene pool
Founder Effect
39. Process in which DNA is duplicated
If you lose one then you will still have one to back you up.
GATTACA
replication
gel electrophoresis
40. The independant evolution of similar traits - starting from a similar ancestral condition
Parallel Evolution
Geologic Evolution
body fossils
Petrification
41. A base found in DNA (but not in RNA). This base pairs with Adenine.
Mutation
Population
Thymine
Natural Selection
42. A DNA double helix is held together in the center by between nitrogenous bases
Ecological (habitat) Isolation
hydrogen bonds
Somatic
Autosomes
43. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.
embryological evidence
analogous (Evolution Evidence)
Chromosomes
Homozygote
44. Transfer RNA; type of RNA that carries amino acids to the ribosome
Punnett Square
Sedimentary Rock
Gene flow
tRNA
45. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.
mutation
Variation
Fitness
restriction enzymes - sticky ends
46. The study relating the evolution of new charateristics to changes in the genes controlling development
Fitness
Evo Devo
Independent assortment
Genetic Equilibrium
47. A combining of genes or characters different from what they were in the parents
homologous (Evolution Evidence)
Recombination
Genetic Equilibrium
cytosine in DNA is about equal to the percentage of guanine molecules
48. Organ that serves no useful function in an organism
Hershey and Chase
Molecular biology
Vestigial organs
homologous (Evolution Evidence)
49. The number of times an allele appears in a population
Homologous Structures
Gene mutation
Somatic
Allele Frequency
50. What does DNA stand for...
deoxyribonucleic acid
Histone
Dihybrid
rRNA