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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. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful
Post -zygotic Mechanisms
Pentadactyl limb
Hybrid Breakdown
Molecular biology
2. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
vestigial (Evolution Evidence)
geologic time scale
Chromosomes
Amber
3. Gradual evolution within a lineage
Genetic Equilibrium
Phyletic Gradualism (anagenesis)
Alleles
Sequential Evolution
4. The final product of transcription is...
Ecological Barrier
mRNA
Heritable variation
Adaptation
5. A base found in DNA (but not in RNA). This base pairs with Adenine.
Thymine
chromatin
Immigration
Mesozoic era
6. Which structure contains anticodons
Codon
Extinction
tRNA
Adaptive Radiation
7. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
GATTACA
Double Helix
Adenine
Sub - species
8. Change to a chromosome in which part of the chromosome is repeated
Guanine
Homologous pair
Duplication
Post -zygotic Mechanisms
9. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids
Stasis
Artificial selection
Cenozoic era
Mendel's traits are now called _____ found on DNA
10. 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.
Mechanical (morphological) Isolation
Vestigial structure
Variation
Locus
11. 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
Deletion
Paleozoic era
Thymine
Allele Frequency
12. Which type of Rna functions as a blue print of the genetic code
Adaptation
mRNA
Codon
homologous (Evolution Evidence)
13. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.
Allele
Evolution
Variation
Pentadactyl limb
14. Situation in which allele frequencies remain constant
Genetic Equilibrium
Medel worked with _____
Dominant
Genetic Drift
15. Innate trait; shared ancestry
cytoplasm
Mold
body fossils
homologous (Evolution Evidence)
16. The type of environment in which an organism or group normally lives or occurs
Habitat
Genotype
Comparative Anatomy
amino acids
17. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.
Homologous Structures
embryological evidence
clinC
Genetic Drift
18. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)
Genetic Equilibrium
nucleus
Dihybrid
Hershey and Chase
19. A mutation in which one nucleotide is replaced by another nucleotide
Substitution
Ecological (habitat) Isolation
Fossils
Cytosine
20. 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
Founder Effect
Bottle neck effect
Coevolution
21. How often a form of a gene appears in a gene pool
Ice
three
Allele Frequency
GATTACA
22. The movement of individuals into an area
Gametic
Gene mutation
gel electrophoresis
Immigration
23. Periods of little adaptive change
Homozygous
Stasis
Directional Selection
Hybrid Infertility
24. Mating of 2 oism that differ in 2 characters
its negative charge
Test Cross
amino acids
Dihybrid Cross
25. The formation of new species as a result of evolution
Genotype
Punctuated Equilibrium
Mutation
Speciation
26. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.
Test Cross
Monophyletic
Autosomes
three
27. Is found in DNA
Heterozygous
Gene Pool
thymine
Mesozoic era
28. Hybrid is sterile so biologically unfit
nucleotides
Sympatric Speciation
Hybrid Infertility
Dominant
29. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.
Geologic Evolution
Ring Species
Extinction
Clade
30. 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.
transcription
Pentadactyl limb
deoxyribose and phosphate
Gametic
31. Mutation where an extra base is added
Insertion
thymine
Coevolution
Homozygote
32. Synonym for protein; chain of amino acids
3 nucleotides
trace fossils
polypeptide
Mendel's traits are now called _____ found on DNA
33. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with
Monophyletic
GATTACA
Variation
Gene Pool
34. Organ no longer serves a function
vestigial (Evolution Evidence)
Adenine
introns
Vestigial organs
35. Consists of all genes - including all the different alleles - that are present in a population
Substitution
introns
Gene pool
Common Ancestor
36. An evolutionary 'branch' and its daughter 'twigs'
Pentadactyl limb
Clade
Mutation
Independent assortment
37. When F1 is fully fertile but F2 has low fertility (rice - cotton)
Autosomes
Endemic
polypeptide
Hybrid Breakdown
38. The sum total of an organism's requirements; its way of life
deoxyribose and phosphate
Testcross
Niche
Thymine
39. A taxon originating from and including a single common ancestor
Monophyletic
Parallel Evolution
nucleus
molecular evidence
40. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes
embryological evidence
Haploid/Monoploid
Evolution
Allele Frequency
41. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
three
Homozygote
index fossil
Macroevolution
42. A change in the base sequence of a gene
Gene mutation
Pre -zygotic Mechanisms
Comparative Anatomy
Bottle neck effect
43. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value
Allopatric Speciation
Stabilising selection
Homozygous
cytoplasm
44. Breeding organisms with specific traits in order to produce offspring with identical traits
Genetic Equilibrium
Chromosome mutation
Artificial selection
3 nucleotides
45. A distinct population of a species that varies from other populations of the same species.
Chromosomes
replication
Sub - species
Chiasma
46. Identical alleles for a gene
geologic time scale
Parallel Evolution
Homozygote
Dominant
47. Nucleotides that control which amino acids are added during protein synthesis
Codon
analogous (Evolution Evidence)
Endemic
RNA polymerase
48. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.
Independent assortment
Test Cross
Chiasma
Adaptive Radiation
49. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Directional Selection
Reproductive Isolation
Gene mutation
Geographical Isolation
50. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.
mRNA
Chromosomes
Cast
Fossils