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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. Is the evolutionary process whereby a population becomes better suited to its habitat
Adaptation
Comparative Anatomy
Vestigial structure
Dominant
2. Because of base pairing in DNA the amount of
cytosine in DNA is about equal to the percentage of guanine molecules
Geographical Isolation
stop codon
Allele Frequency
3. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid
Sequential Evolution
Nucleotide
Hershey and Chase
Geologic Evolution
4. Movement of alleles into or out of a population due to the migration of individuals to or from the population
Analogous structures
Medel worked with _____
Heterozygous
Gene flow
5. How often a particular gene occurs in the population
Incomplete Dominance
Population
Fossils
Gene frequency
6. 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.
Phylogeny
mRNA
Artificial selection
Heterozygous
7. 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.
mutation
RNA polymerase
Absolute dating
Chromosome mutation
8. 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.
translation
False RNA
cytosine in DNA is about equal to the percentage of guanine molecules
Homozygous
9. The gradual changes in gene frequencies in a population due to random events
Genotype
Molecular biology
Habitat
Genetic Drift
10. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches
Adaptive Radiation
Behavioral (ethological) Isolation
Deme
Mutation
11. Movement of organisms ro of from a population
replication
Migration
Genetic Equilibrium
Dihybrid
12. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes
nucleus
Haploid/Monoploid
Semi - conservative replication
Phenotype
13. Synonym for protein; chain of amino acids
anticodon
Balanced Polymorphism
Pentadactyl limb
polypeptide
14. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.
rRNA
Biogeography
Phenotype
Genome
15. Is found in DNA
Heterozygous
Meiosis
thymine
Hershey and Chase
16. The evolutionary process by which a species becomes better suited to its niche.
tRNA
Adaptation
Extinction
deoxyribonucleic acid
17. Separates DNA by size
gel electrophoresis
that is complementary to a single strand of DNA
Migration
Dihybrid
18. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic
geologic time scale
Gametic
Vestigial organs
Hybrid Breakdown
19. DNA that is coiled around proteins
Phyletic Gradualism (anagenesis)
Monohybrid Cross
analogous (Evolution Evidence)
chromatin
20. Organ that serves no useful function in an organism
Vestigial organs
anticodon
Hybrid Infertility
geologic time scale
21. Name for oism with one dominant and one recessive allele
codon
Heterozygous
Variation
Speciation
22. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids
Divergent Evolution
Bottle neck effect
deoxyribose and phosphate
Cenozoic era
23. The formation of new species as a result of evolution
gel electrophoresis
Speciation
Medel worked with _____
3 nucleotides
24. When F1 is fully fertile but F2 has low fertility (rice - cotton)
Pentadactyl limb
Gene pool
Independent assortment
Hybrid Breakdown
25. The independant evolution of similar traits - starting from a similar ancestral condition
Homologous pair
Immigration
Analogous Structures (analogies)
Parallel Evolution
26. Copying the code from DNA onto mRNA
mRNA
Homologous Structures
transcription
genes
27. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti
Industrial Melanism
translation
Character Displacement
Meiosis
28. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
watson and crick
Chromosomes
Vestigial structure
Genome
29. Situation in which allele frequencies remain constant
Genetic Equilibrium
Mutation
embryological evidence
mRNA
30. Impression made from a organism in soft material such as sand or mud.
Speciation
Codon
Clade
Mold
31. How often a form of a gene appears in a gene pool
Allele Frequency
Parallel Evolution
Extinction
body fossils
32. Innate trait; shared ancestry
genes
Absolute dating
homologous (Evolution Evidence)
Polyploidy
33. A change in the base sequence of DNA; the ultimate source of new alleles
Industrial Melanism
Mutation
translation
3 nucleotides
34. The sum total of an organism's requirements; its way of life
Allele Frequency
Reproductive Isolation
Niche
Mate Selection
35. Identical alleles for a gene
Medel worked with _____
NIche Isolation
Homozygote
hydrogen bonds
36. The structure on a tRNA molecule that allows it interact with an mRNA molecule
Mass Extinction
Molecular biology
Genetic Equilibrium
anticodon
37. Process in which DNA is duplicated
Industrial Melanism
replication
Extinction
Character Displacement
38. 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.
geologic time scale
cytosine in DNA is about equal to the percentage of guanine molecules
Vestigial structure
Species
39. Building block of a nucleic acid (DNA and RNA)
Directional Selection
nucleotide
Mass Extinction
Deme
40. Determined the complete double helical structure of DNA
Mendel's traits are now called _____ found on DNA
Polyploidy
Analogous Structures (analogies)
watson and crick
41. A nucleotide of RNA is made of...
Migration
Artificial selection
Heterozygous
ribose - phosphate - and a base
42. 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.
tRNA
Genetic Drift
Homozygote
Dominant
43. Form of reproductive isolation in which two populations reproduce at different times
Pre -zygotic Mechanisms
Temporal Isolation
Common Ancestor
Phylogeny
44. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Gene Pool
Genome
tRNA
Selection pressure
45. Even if the gametes of the two species meet - fertilization does not occur
rRNA
geologic time scale
Gene
Gamete Isolation
46. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
NIche Isolation
Fossil
molecular evidence
Bottleneck Effect
47. Mating of 2 oism that differ in 2 characters
Dihybrid Cross
Mendel's traits are now called _____ found on DNA
Genotype
Speciation
48. Is active during transcription
cytosine in DNA is about equal to the percentage of guanine molecules
Translocation
analogous (Evolution Evidence)
RNA polymerase
49. One of the identical rods of a chromosome.
Chromatid
Petrification
tRNA
The cell uses information from mRNA to produce proteins
50. An evolutionary 'branch' and its daughter 'twigs'
Geologic Evolution
Sub - species
Adaptive Radiation
Clade