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CSET Genetics And Evolution
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Subjects
:
cset
,
science
,
genetics
Instructions:
Answer 50 questions in 15 minutes.
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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. Mutation where an extra base is added
Autosomes
Paleozoic era
Insertion
Character Displacement
2. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y
clinC
Sex Chromosomes
Locus
Species
3. An evolutionary 'branch' and its daughter 'twigs'
Clade
Evo Devo
transcription
stop codon
4. Is active during transcription
Deme
If you lose one then you will still have one to back you up.
RNA polymerase
Guanine
5. The final product of transcription is...
Selection pressure
Alleles
nucleus
mRNA
6. Determined the complete double helical structure of DNA
Post -zygotic Mechanisms
watson and crick
Fitness
Common Ancestor
7. 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
Dihybrid
Paleozoic era
cytoplasm
Comparative Anatomy
8. Which structure contains anticodons
tRNA
Double Helix
transcription
Endemic
9. Independent segregation of genes during the formation of gametes
Independent assortment
Monophyletic
Mutation
Ice
10. Features that are superficially similar but have different modes of development
nucleotide
Comparative Embryology
Analogous Features
Artificial selection
11. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Chromatid
Convergent Evolution
Mutation
Hominid
12. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species
polypeptide
Semi - conservative replication
Paleozoic era
Mechanical (morphological) Isolation
13. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful
Post -zygotic Mechanisms
False RNA
Directional Selection
Comparative Anatomy
14. An ancestor that two or more descendants have in common
Common Ancestor
its negative charge
Habitat
Balanced Polymorphism
15. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles
Heterozygous
Reproductive Isolation
Homozygous
Dihybrid
16. DNA is made of...
tRNA
Directional Selection
Comparative anatomy
nucleotides
17. Movement of organisms ro of from a population
embryological evidence
Geographical Isolation
Migration
Species
18. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid
Biogeography
Directional Selection
Gene frequency
Nucleotide
19. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.
Evolution
Chiasma
Mate Selection
Reproductive Isolation
20. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances
Translocation
replication
Ring Species
Comparative Embryology
21. Form of reproductive isolation in which two populations reproduce at different times
Temporal Isolation
Genome
Mitosis
Biogeography
22. Gradual evolution within a lineage
Gene Flow
Sequential Evolution
Gene flow
Artificial selection
23. The gradual changes in gene frequencies in a population due to random events
Petrification
Biogeography
Stabilising
Genetic Drift
24. How often a form of a gene appears in a gene pool
Allele Frequency
rRNA
Igneous and metamorphic rock
Migration
25. The backbone of DNA consist of...
Environment
Crossing over
Molecular biology
deoxyribose and phosphate
26. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Adaptation
nucleotide
Disruptive Selection
Gene Pool
27. Evolution of living things - based on evidence from the past and present.
Mendel's Principle of Segregation
Monophyletic
Semi - conservative replication
Organic Evolution
28. Process by which one species gives rise to two or more species
GATTACA
restriction enzyme
Speciation
Somatic
29. One of the identical rods of a chromosome.
codon
Chromatid
Mutation
Dominant
30. 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
Analogous Structures (analogies)
Monophyletic
Autosomes
Population
31. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
Monophyletic
that is complementary to a single strand of DNA
Genotype
true
32. 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.
Natural Selection
Test Cross
Behavioral (ethological) Isolation
Variation
33. A base found in DNA (but not in RNA). This base pairs with Adenine.
Sedimentary Rock
transcription
Thymine
Reproductive Isolation
34. 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
Medel worked with _____
Natural Selection
index fossil
Adaptation
35. 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.
Pentadactyl limb
Common Ancestor
mRNA
Relative dating
36. Closely related species occupying different habitats - niches preventing them from interbreeding
Adaptive Radiation
Recessive
Haploid/Monoploid
Ecological Barrier
37. 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.
Sequential Evolution
Heterozygous
translation
rRNA
38. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells
Thymine
Allele
Directional Selection
Histone
39. Form of reproductive isolation in which tere are differences in species courtship behavior
Behavioral (ethological) Isolation
Pentadactyl limb
Duplication
Mutation
40. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.
Directional Selection
nucleus
Cast
that is complementary to a single strand of DNA
41. When competition causes two closely related species to become more different in regions where their ranges overlap
Character Displacement
Test Cross
GATTACA
Natural Selection
42. The number of times an allele appears in a population
Hershey and Chase
Mutation
Allele Frequency
Insertion
43. Transcrition occurs in the...
Post -zygotic Mechanisms
nucleus
Gametic
Recessive
44. When zygote does not complete development or is physically weaker than normal
mRNA
Hybrid Inviability
Bottleneck Effect
Homozygote
45. 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.
tRNA
Homologous pair
Crossing over
analogous (Evolution Evidence)
46. Mating of 2 oism that differ in 2 characters
NIche Isolation
Population
Dihybrid Cross
Hybrid Inviability
47. Translation occurs in the...
cytoplasm
Guanine
tRNA
Homozygous
48. What does DNA stand for...
mutation
Genetic Equilibrium
trace fossils
deoxyribonucleic acid
49. 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.
Sympatric Speciation
Phenotype
Test Cross
genes
50. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.
False genes
tRNA
Evolution
transcription
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