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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. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches
Pre -zygotic Mechanisms
watson and crick
Heterozygote
Adaptive Radiation
2. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.
homologous (Evolution Evidence)
clinC
Double Helix
Chromosome mutation
3. Speciation preceded by a period of geographical isolation
mRNA
Allopatric Speciation
Hominid
Allele Frequency
4. A pairing where the parent plants differ in only one character.
chromatin
Monohybrid Cross
Allele Frequency
Comparative anatomy
5. The study relating the evolution of new charateristics to changes in the genes controlling development
Evo Devo
Rosalind Franklin
Microevolution
Analogous structures
6. Consists of all genes - including all the different alleles - that are present in a population
Gene pool
clinC
Mechanical (morphological) Isolation
mutation
7. The gradual changes in gene frequencies in a population due to random events
If you lose one then you will still have one to back you up.
Adenine
Genetic Drift
Insertion
8. How many codons are needed to specify three amino acids
three
Genotype
Centromere
Mass Extinction
9. Copying the code from DNA onto mRNA
Population
replication
gel electrophoresis
transcription
10. Human - like species that existed millions of years ago as witnessed through fossil evidence.
Sympatric Speciation
Hominid
Fossil
Hybrid Inviability
11. The region of the chromosome that holds the two sister chromatids together during mitosis
Adaptation
translation
Centromere
Duplication
12. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.
Homologous structures
Endemic
Microevolution
Niche
13. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.
Vestigial structure
Sub - species
Gene flow
Adenine
14. The gradual changes in gene frequencies in a population due to random events
index fossil
Phenotype
Genetic Drift
Hybrid Breakdown
15. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are
Gene Pool
analogous (Evolution Evidence)
Temporal Isolation
tRNA
16. Method of replication that implies that each new strand of DNA is half original and half new
Semi - conservative replication
Comparative Embryology
Fitness
nucleus
17. 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
Heterozygous
Paleozoic era
Independent assortment
Sub - species
18. Organ that serves no useful function in an organism
Mendel's Principle of Segregation
Independent assortment
Vestigial organs
Clade
19. T or F a codon consist of three nucleotides
true
Population
Mate Selection
Reproductive Isolation
20. Because of base pairing in DNA the amount of
Analogous Features
Genetic Drift
cytosine in DNA is about equal to the percentage of guanine molecules
Artificial selection
21. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
If you lose one then you will still have one to back you up.
Sedimentary Rock
Variation
Allopatric Speciation
22. One of the identical rods of a chromosome.
Deletion
Chromatid
Phenotype
Gene Pool
23. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
Environment
Genotype
Cytosine
Selection
24. 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.
Analogous Features
Chromosomes
Igneous and metamorphic rock
Homozygous
25. Identical alleles for a gene
False genes
Homozygote
analogous (Evolution Evidence)
Post -zygotic Mechanisms
26. The signal on a mRNA molecule that designates the end of the coding sequence is called the...
Population
stop codon
Allele
mRNA
27. Building block of a nucleic acid (DNA and RNA)
anticodon
restriction enzyme
Comparative Embryology
nucleotide
28. DNA that is coiled around proteins
ribose - phosphate - and a base
chromatin
Phylogeny
Hybrid Breakdown
29. Organ no longer serves a function
Precambrian era
Mesozoic era
vestigial (Evolution Evidence)
Stasis
30. Form of reproductive isolation in which tere are differences in species courtship behavior
Analogous Features
three
Behavioral (ethological) Isolation
Parallel Evolution
31. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.
Fossils
Heterozygous
Bottle neck effect
Monophyletic
32. Disappearance of a species from all parts of its geographical range
Extinction
Heterozygous
Nucleotide
Amber
33. Selection for the ability to obtain a mate
Niche
Haploid/Monoploid
Sexual Selection
embryological evidence
34. Trait where heterozygous is a blending of two alleles
embryological evidence
Dihybrid Cross
its negative charge
Genotype
35. Process by which a ribosome uses the code on mRNA to make proteins
Recessive
translation
Genotype
Homologous Structures
36. 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.
Translocation
Dominant
Directional Selection
body fossils
37. 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.
Macroevolution
Behavioral (ethological) Isolation
Allele Frequency
Relative dating
38. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.
Comparative Anatomy
Mutagen
Recessive
Diploid
39. Predicts the possible outcome of a genetic cross.
Mendel's traits are now called _____ found on DNA
Punnett Square
Founder effect
Microevolution
40. Are noncoding sequences in the gene that are removed from RNA after transcription
mRNA
Heritable variation
Bottle neck effect
introns
41. Transfer RNA; type of RNA that carries amino acids to the ribosome
Allele Frequency
tRNA
Centromere
index fossil
42. The sum total of an organism's requirements; its way of life
Behavioral (ethological) Isolation
Comparative anatomy
Niche
Hybrid Inviability
43. Is any chromosome that is not a sex chromosome.
Autosomes
Directional Selection
Homozygous
Endemic
44. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species
polypeptide
Gene pool
Genetic Drift
Mechanical (morphological) Isolation
45. Found only in that country
Endemic
Population
Mendel's traits are now called _____ found on DNA
molecular evidence
46. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species
Population
mutation
Hybrid
Comparative Anatomy
47. The formation of new species as a result of evolution
analogous (Evolution Evidence)
Speciation
Sequential Evolution
Population
48. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful
Extinction
Macroevolution
Post -zygotic Mechanisms
Comparative anatomy
49. When zygote does not complete development or is physically weaker than normal
homologous (Evolution Evidence)
RNA polymerase
Hybrid Inviability
Hershey and Chase
50. A change or error in the DNA sequence
mutation
Recombination
Chiasma
Punnett Square