SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Building block of a protein
Insertion
amino acid
hydrogen bonds
Environment
2. Movement of alleles into or out of a population due to the migration of individuals to or from the population
Bottle neck effect
Gene flow
Punnett Square
hydrogen bonds
3. Because of base pairing in DNA the amount of
Relative dating
cytosine in DNA is about equal to the percentage of guanine molecules
Haploid/Monoploid
Gametic
4. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies
Stabilising
rRNA
Geologic Evolution
molecular evidence
5. The independant evolution of similar traits - starting from a similar ancestral condition
mutation
Mutation
Ice
Parallel Evolution
6. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid
Phenotype
Geologic Evolution
Nucleotide
Phyletic Gradualism (anagenesis)
7. The comparison of the structures of different organisms
molecular evidence
NIche Isolation
Comparative anatomy
Crossing over
8. A group of organisms of the same species occupying a given area.
Recessive
Population
transcription
Extinction
9. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Geographical Isolation
Genome
Common Ancestor
Dihybrid
10. Process in which DNA is duplicated
Dominant
genes
replication
3 nucleotides
11. Is the evolutionary process whereby a population becomes better suited to its habitat
Dominant
Adaptation
Directional Selection
replication
12. Selection for the ability to obtain a mate
Homologous structures
Genetic Drift
Sexual Selection
Crossing over
13. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.
Somatic
Analogous structures
Speciation
Codon
14. Selection against one end of a range of variation - resulting in a progressive change in allele frequency
Directional Selection
Gene Flow
DNA
Natural Selection
15. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.
Homozygous
Ecological Barrier
introns
Gametic
16. The signal on a mRNA molecule that designates the end of the coding sequence is called the...
Germ
stop codon
Gene
nucleotide
17. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Adaptation
Chromosomes
codon
Polyploidy
18. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
Incomplete Dominance
Medel worked with _____
Petrification
19. All the factors in an organism's surroundings that can potentially affect it
tRNA
nucleotides
Environment
Autosomes
20. The number of times an allele appears in a population
Allele Frequency
Natural Selection
Ecological (habitat) Isolation
Genetic Drift
21. Genes contain instructions for assembling
DNA fingerprint
Founder Effect
Autosomes
proteins
22. Found only in that country
Endemic
Dominant
Independent assortment
Pre -zygotic Mechanisms
23. Copying the code from DNA onto mRNA
Population
analogous (Evolution Evidence)
Rosalind Franklin
transcription
24. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome
Allopatric Speciation
mRNA
Phylogeny
Stasis
25. 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
deoxyribonucleic acid
Analogous Structures (analogies)
Meiosis
amino acids
26. A mutation in which one nucleotide is replaced by another nucleotide
Substitution
Sympatric Speciation
Adaptation
Genetic Drift
27. 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
Rosalind Franklin
Post -zygotic Mechanisms
mRNA
28. Change to a chromosome in which a fragment of the chromosome is removed
Directional Selection
Deletion
Codon
Genetic Drift
29. Name for oism with one dominant and one recessive allele
Heterozygous
Coevolution
Cenozoic era
Environment
30. Proteins are made of...
amino acids
Monohybrid
Allopatric Speciation
Insertion
31. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related
Divergent Evolution
Dihybrid Cross
Chromosomes
Punnett Square
32. The enzyme that binds to the promoter region of a gene during transcription is called...
RNA polymerase
Adaptation
ribose - phosphate - and a base
Monohybrid
33. Natural selection that causes the frequency of a particular allele to move in one direction
embryological evidence
Gene flow
Dominant
Directional Selection
34. Even if the gametes of the two species meet - fertilization does not occur
False RNA
Geographical Isolation
Gamete Isolation
Clade
35. 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.
introns
Clade
rRNA
Dominant
36. When F1 is fully fertile but F2 has low fertility (rice - cotton)
Niche
analogous (Evolution Evidence)
Sympatric Speciation
Hybrid Breakdown
37. A base found in DNA (but not in RNA). This base pairs with Adenine.
Thymine
Sex Chromosomes
Cast
Test Cross
38. How often a particular gene occurs in the population
Gene frequency
Species
cytoplasm
Genetic Equilibrium
39. process in which homologous chromosomes exchange portions of their chromatids during meiosis.
Sequential Evolution
three
Crossing over
anticodon
40. Which type of Rna functions as a blue print of the genetic code
transcription
Homozygous
Homozygote
mRNA
41. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species
Mechanical (morphological) Isolation
transcription
Allele
Endemic
42. A body cell
Germ
GATTACA
Disruptive Selection
Somatic
43. 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
Gametic
Insertion
Paleozoic era
chromatin
44. When competition causes two closely related species to become more different in regions where their ranges overlap
Character Displacement
Bottle neck effect
Gene Pool
Genetic Equilibrium
45. A change or error in the DNA sequence
watson and crick
Meiosis
Gene mutation
mutation
46. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection
Crossing over
Gamete Isolation
Hybrid
Hershey and Chase
47. Used x ray cyrstallography to create an image of DNA
Rosalind Franklin
Germ
Mutation
homologous (Evolution Evidence)
48. Any agent that can cause a change in DNA
Mutagen
Test Cross
Sequential Evolution
Stabilising
49. Different alleles for a gene
Hershey and Chase
Incomplete Dominance
translation
Heterozygote
50. T or F If a nucleic acid contain uracil it is DNA
Hershey and Chase
Heritable variation
Homozygote
False RNA