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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. 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.
molecular evidence
Vestigial organs
watson and crick
Heterozygous
2. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances
Extinction
nucleotides
Monohybrid
Ring Species
3. The preserved remains or traces of an organism that lived in the past
Sub - species
Fossil
Hybrid Inviability
Mendel's Principle of Segregation
4. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome
gel electrophoresis
mRNA
chromatin
Deme
5. Features that are superficially similar but have different modes of development
Test Cross
Analogous Features
Organic Evolution
Parallel Evolution
6. An episode of large - scale extinction affecting many different groups of organisms within a short period of time
Mass Extinction
body fossils
Comparative Anatomy
Double Helix
7. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.
Phenotype
Monohybrid Cross
Selection
rRNA
8. How often a form of a gene appears in a gene pool
analogous (Evolution Evidence)
Monohybrid Cross
Phenotype
Allele Frequency
9. Used x ray cyrstallography to create an image of DNA
Rosalind Franklin
DNA
mRNA
Ecological (habitat) Isolation
10. Mating of 2 oism that differ in 2 characters
Dihybrid Cross
amino acid
Biogeography
Fossil
11. The environmental factors that favour certain phenotypes
Selection pressure
Mechanical (morphological) Isolation
Guanine
Fossils
12. Actual remains of an organism such as bones - teeth - shells - etc.
Heritable variation
Ecological Barrier
body fossils
translation
13. The study relating the evolution of new charateristics to changes in the genes controlling development
False genes
trace fossils
Mate Selection
Evo Devo
14. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value
Ecological (habitat) Isolation
Semi - conservative replication
Mitosis
Stabilising selection
15. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.
Homologous structures
Translocation
proteins
Analogous structures
16. A population partially isolated from other populations of the same species
Biogeography
Variation
Deme
mRNA
17. Another term for pure breeding
3 nucleotides
Cenozoic era
Molecular biology
Homozygous
18. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic
geologic time scale
Population
that is complementary to a single strand of DNA
Selection
19. A change in the base sequence of DNA; the ultimate source of new alleles
Coevolution
translation
Mutation
Haploid/Monoploid
20. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.
embryological evidence
thymine
Selection
Phenotype
21. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Heterozygous
Biogeography
true
Geographical Isolation
22. Independent segregation of genes during the formation of gametes
Population
Heritable variation
Comparative embryology
Independent assortment
23. What is one benefit for having two strands of DNA?
polypeptide
If you lose one then you will still have one to back you up.
Incomplete Dominance
DNA fingerprint
24. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together
restriction enzymes - sticky ends
Polyploidy
Founder effect
Sex Chromosomes
25. Any preserved remains of an organism from the past. Usually found in sedimentary rock.
Mass Extinction
DNA
Mendel's traits are now called _____ found on DNA
Fossils
26. Translation occurs in the...
cytoplasm
Genetic Equilibrium
Geologic Evolution
nucleotide
27. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)
Genetic Equilibrium
Hybrid Inviability
Gene Pool
Genome
28. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.
Pre -zygotic Mechanisms
Molecular biology
Recessive
Igneous and metamorphic rock
29. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids
codon
Cenozoic era
Evolution
Directional Selection
30. A unique combination of traits that are passed down from one generation to another.
Dominant
Absolute dating
Alleles
Heritable variation
31. T or F If a nucleic acid contain uracil it is DNA
False RNA
Mendel's traits are now called _____ found on DNA
Mechanical (morphological) Isolation
Gene flow
32. Even if the gametes of the two species meet - fertilization does not occur
Mass Extinction
Post -zygotic Mechanisms
Insertion
Gamete Isolation
33. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells
tRNA
Histone
Amber
Analogous Structures (analogies)
34. Mutation where an extra base is added
rRNA
Heterozygous
Insertion
Duplication
35. The region of the chromosome that holds the two sister chromatids together during mitosis
Centromere
Hybrid Inviability
Mutagen
Chromosome mutation
36. A base found in DNA (but not in RNA). This base pairs with Adenine.
Thymine
genes
Post -zygotic Mechanisms
Balanced Polymorphism
37. Is active during transcription
NIche Isolation
Immigration
Heterozygous
RNA polymerase
38. Large - scale evolutionary changes that take place over long periods of time
Macroevolution
chromatin
restriction enzyme
Species
39. A taxon originating from and including a single common ancestor
Monophyletic
Dominant
cytosine in DNA is about equal to the percentage of guanine molecules
Geologic Evolution
40. A combining of genes or characters different from what they were in the parents
tRNA
nucleotides
hydrogen bonds
Recombination
41. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Dihybrid
geologic time scale
Gene Pool
Mass Extinction
42. Selection against one end of a range of variation - resulting in a progressive change in allele frequency
Crossing over
Vestigial organs
Directional Selection
tRNA
43. During transcription an RNA molecule is formed
that is complementary to a single strand of DNA
index fossil
body fossils
Igneous and metamorphic rock
44. Proteins are made of...
amino acids
Artificial selection
Genetic Equilibrium
Locus
45. These prevent fertilization between species e.g. diff breeding season - mating behaviour
Genetic Equilibrium
three
Pre -zygotic Mechanisms
Artificial selection
46. Periods of little adaptive change
Relative dating
Stasis
Vestigial organs
Reproductive Isolation
47. Disappearance of a species from all parts of its geographical range
Extinction
Pentadactyl limb
Gamete Isolation
Adaptive Radiation
48. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
Nucleotide
Centromere
rRNA
49. When competition causes two closely related species to become more different in regions where their ranges overlap
nucleotide
Character Displacement
Incomplete Dominance
Mutation
50. Organ that serves no useful function in an organism
Vestigial organs
DNA
homologous (Evolution Evidence)
Amber