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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. When competition causes two closely related species to become more different in regions where their ranges overlap
hydrogen bonds
Speciation
cytosine in DNA is about equal to the percentage of guanine molecules
Character Displacement
2. A change in the base sequence of DNA; the ultimate source of new alleles
Geologic Evolution
Population
Mutation
Cast
3. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.
Divergent Evolution
Cast
Comparative Anatomy
Heterozygous
4. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
Phyletic Gradualism (anagenesis)
hydrogen bonds
Convergent Evolution
5. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
NIche Isolation
Genetic Equilibrium
Homologous structures
Speciation
6. 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.
Guanine
Testcross
Genetic Equilibrium
Absolute dating
7. A trait that masks the expression of another trait
tRNA
Dominant
Selection
Monohybrid Cross
8. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz
Incomplete Dominance
Convergent Evolution
Molecular biology
Medel worked with _____
9. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related
rRNA
Adaptation
Divergent Evolution
Hybrid Inviability
10. Separation of species or populations so that they cannot interbreed and produce fertile offspring
Reproductive Isolation
Population
Organic Evolution
Isolating Mechanism
11. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations
Homologous pair
Phyletic Gradualism (anagenesis)
Nucleotide
vestigial (Evolution Evidence)
12. Determined the concept of complementary base pairing
Chargaff
Translocation
geologic time scale
Testcross
13. Ribosomal RNA; type of RNA that makes up part of the ribosome
Founder Effect
Adaptive Radiation
gel electrophoresis
rRNA
14. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
Clade
Test Cross
Adenine
Comparative anatomy
15. How many codons are needed to specify three amino acids
genes
molecular evidence
Parallel Evolution
three
16. The comparison of the structures of different organisms
Test Cross
Comparative anatomy
Species
tRNA
17. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups
Speciation
Species
Chargaff
Translocation
18. 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.
Variation
Punnett Square
Isolating Mechanism
Monophyletic
19. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.
Homologous Structures
Mate Selection
Extinction
Fossil
20. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.
Niche
Centromere
molecular evidence
Substitution
21. Dna moves during electrophoresis because of...
Convergent Evolution
Genome
its negative charge
Comparative Embryology
22. Even if the gametes of the two species meet - fertilization does not occur
Adaptive Radiation
Gamete Isolation
Vestigial organs
Dihybrid Cross
23. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.
Divergent Evolution
Genotype
Species
Bottle neck effect
24. Change in allele frequencies as a result of the migration of a small subgroup of a population
Punnett Square
Mate Selection
False genes
Founder Effect
25. A nucleotide of RNA is made of...
Autosomes
proteins
ribose - phosphate - and a base
Allele
26. Because of base pairing in DNA the amount of
cytosine in DNA is about equal to the percentage of guanine molecules
Cast
true
3 nucleotides
27. Large - scale evolutionary changes that take place over long periods of time
Population
Macroevolution
introns
Chromatid
28. Used x ray cyrstallography to create an image of DNA
False RNA
RNA polymerase
Rosalind Franklin
true
29. These prevent fertilization between species e.g. diff breeding season - mating behaviour
Biogeography
Pre -zygotic Mechanisms
proteins
Meiosis
30. How often a form of a gene appears in a gene pool
proteins
Allele Frequency
that is complementary to a single strand of DNA
rRNA
31. A distinct population of a species that varies from other populations of the same species.
Sub - species
Niche
Gene mutation
ribose - phosphate - and a base
32. Speciation preceded by a period of geographical isolation
Genetic Drift
deoxyribose and phosphate
that is complementary to a single strand of DNA
Allopatric Speciation
33. Building block of a nucleic acid (DNA and RNA)
DNA
Somatic
nucleotide
Ecological Barrier
34. Transcrition occurs in the...
Mutation
nucleus
deoxyribonucleic acid
NIche Isolation
35. 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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36. During transcription an RNA molecule is formed
Niche
Adaptive Radiation
that is complementary to a single strand of DNA
Founder effect
37. 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
proteins
Gene flow
Ecological (habitat) Isolation
polypeptide
38. 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.
Chromosome mutation
stop codon
tRNA
Test Cross
39. Form of reproductive isolation in which tere are differences in species courtship behavior
Chiasma
Behavioral (ethological) Isolation
RNA polymerase
Natural Selection
40. T or F A cloned organism has the same proteins as another organism
False genes
Macroevolution
Mate Selection
Extinction
41. A mutation in which one nucleotide is replaced by another nucleotide
mRNA
Allopatric Speciation
Substitution
Genetic Drift
42. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
Homologous structures
gel electrophoresis
Mechanical (morphological) Isolation
Sedimentary Rock
43. 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
Homologous structures
transcription
Punctuated Equilibrium
44. Process in which DNA is duplicated
replication
Convergent Evolution
3 nucleotides
Recessive
45. 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.
Double Helix
Natural Selection
Evolution
Allele
46. Group of individuals of the same species that live in the same area
Punctuated Equilibrium
proteins
transcription
Population
47. Periods of rapid evolution punctuated by periods of little change
Mendel's Principle of Segregation
Heterozygous
Mass Extinction
Punctuated Equilibrium
48. Periods of little adaptive change
Stasis
Adaptive Radiation
Macroevolution
Germ
49. Organ no longer serves a function
analogous (Evolution Evidence)
vestigial (Evolution Evidence)
Behavioral (ethological) Isolation
clinC
50. Two alternative forms of a gene e.g Tall vs Short
Alleles
Organic Evolution
Directional Selection
Allopatric Speciation