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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. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants
Mesozoic era
Incomplete Dominance
polypeptide
Phyletic Gradualism (anagenesis)
2. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene
transcription
Balanced Polymorphism
Vestigial structure
Directional Selection
3. 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.
Gene Flow
Industrial Melanism
Vestigial structure
Convergent Evolution
4. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele
amino acids
Selection
Somatic
Chiasma
5. The type of environment in which an organism or group normally lives or occurs
Testcross
Gene Flow
Habitat
Allele
6. Change to a chromosome in which part of the chromosome is repeated
Genetic Drift
Duplication
Comparative anatomy
Pre -zygotic Mechanisms
7. A DNA double helix is held together in the center by between nitrogenous bases
codon
hydrogen bonds
gel electrophoresis
Monohybrid Cross
8. Trait evolves overtime; NO common ancestry
analogous (Evolution Evidence)
Genetic Equilibrium
Adaptive Radiation
cytoplasm
9. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Paleozoic era
Geographical Isolation
clinC
Stasis
10. 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.
Evo Devo
Homologous pair
Convergent Evolution
Dominant
11. A change or error in the DNA sequence
Genotype
Sex Chromosomes
Extinction
mutation
12. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids
Punctuated Equilibrium
Cenozoic era
Gene Pool
Deme
13. Chromosomes are collections of many
Testcross
Geologic Evolution
genes
Incomplete Dominance
14. Disappearance of a species from all parts of its geographical range
Somatic
nucleotide
Precambrian era
Extinction
15. 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
mutation
Speciation
Ecological (habitat) Isolation
Stabilising
16. Method of replication that implies that each new strand of DNA is half original and half new
embryological evidence
Homologous Structures
Semi - conservative replication
Temporal Isolation
17. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.
Ecological Barrier
Haploid/Monoploid
embryological evidence
tRNA
18. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.
stop codon
Test Cross
Dihybrid Cross
Ice
19. Process by which one species gives rise to two or more species
Bottle neck effect
Haploid/Monoploid
Speciation
Igneous and metamorphic rock
20. An evolutionary 'branch' and its daughter 'twigs'
Gene Flow
nucleotide
Clade
Biogeography
21. The backbone of DNA consist of...
deoxyribose and phosphate
vestigial (Evolution Evidence)
Gene flow
Gene pool
22. Any agent that can cause a change in DNA
Selection
Fossils
introns
Mutagen
23. The enzyme that binds to the promoter region of a gene during transcription is called...
Directional Selection
Species
RNA polymerase
gel electrophoresis
24. The study of the past and present distribution of species.
Biogeography
deoxyribose and phosphate
Pre -zygotic Mechanisms
tRNA
25. Predicts the possible outcome of a genetic cross.
Punnett Square
Allopatric Speciation
proteins
Genetic Equilibrium
26. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Chromosomes
Temporal Isolation
Allopatric Speciation
Microevolution
27. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.
Adenine
Homologous structures
rRNA
Sexual Selection
28. A distinct population of a species that varies from other populations of the same species.
anticodon
Mesozoic era
Dihybrid
Sub - species
29. Dna moves during electrophoresis because of...
its negative charge
Variation
homologous (Evolution Evidence)
Punctuated Equilibrium
30. Is any chromosome that is not a sex chromosome.
Autosomes
Analogous Features
Variation
geologic time scale
31. Movement of alleles into or out of a population due to the migration of individuals to or from the population
Disruptive Selection
Directional Selection
Gene flow
Mass Extinction
32. What is one benefit for having two strands of DNA?
Thymine
If you lose one then you will still have one to back you up.
index fossil
RNA polymerase
33. 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.
Somatic
Directional Selection
Homozygous
Phylogeny
34. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.
NIche Isolation
Igneous and metamorphic rock
true
Evolution
35. How often a particular gene occurs in the population
Gene frequency
Parallel Evolution
Genetic Equilibrium
Geographical Isolation
36. Identical alleles for a gene
Homozygote
Sequential Evolution
Analogous structures
Phylogeny
37. Change in a DNA sequence that affects genetic information
Mutation
Diploid
Nucleotide
RNA polymerase
38. 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.
Heterozygous
DNA fingerprint
Selection pressure
analogous (Evolution Evidence)
39. Change in allele frequencies as a result of the migration of a small subgroup of a population
Comparative anatomy
Monohybrid
Founder Effect
Sequential Evolution
40. DNA is made of...
Monohybrid Cross
Molecular biology
nucleotides
GATTACA
41. Organ that serves no useful function in an organism
Vestigial organs
Thymine
Mold
Comparative anatomy
42. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.
Testcross
Bottleneck Effect
Stasis
mRNA
43. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
Pre -zygotic Mechanisms
NIche Isolation
Ice
Gene mutation
44. Situation in which allele frequencies remain constant
tRNA
Geologic Evolution
Germ
Genetic Equilibrium
45. Speciation preceded by a period of geographical isolation
GATTACA
Allopatric Speciation
Hybrid
Ecological (habitat) Isolation
46. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
Reproductive Isolation
genes
Genotype
Cast
47. The final product of transcription is...
mRNA
Phyletic Gradualism (anagenesis)
Cenozoic era
Artificial selection
48. Innate trait; shared ancestry
Cenozoic era
homologous (Evolution Evidence)
Stabilising selection
Mitosis
49. process in which homologous chromosomes exchange portions of their chromatids during meiosis.
Crossing over
Allopatric Speciation
watson and crick
Biogeography
50. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor
Comparative embryology
If you lose one then you will still have one to back you up.
Genotype
Homologous Structures