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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. Building block of a protein
Recombination
amino acid
its negative charge
Ice
2. How many codons are needed to specify three amino acids
Directional Selection
translation
RNA polymerase
three
3. The structure on a tRNA molecule that allows it interact with an mRNA molecule
anticodon
index fossil
Niche
proteins
4. 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
Artificial selection
Sub - species
embryological evidence
5. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.
Amber
Genetic Equilibrium
Homologous pair
mRNA
6. 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.
Phylogeny
Igneous and metamorphic rock
Disruptive Selection
Monohybrid
7. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes
Stabilising selection
Haploid/Monoploid
Heterozygous
Heterozygous
8. Form of reproductive isolation in which two populations reproduce at different times
Centromere
Temporal Isolation
Absolute dating
Double Helix
9. The preserved remains or traces of an organism that lived in the past
codon
Fossil
its negative charge
Reproductive Isolation
10. The final product of transcription is...
Gene flow
Dominant
Endemic
mRNA
11. Ribosomal RNA; type of RNA that makes up part of the ribosome
Homozygous
Natural Selection
rRNA
introns
12. Gene
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13. Natural selection that causes the frequency of a particular allele to move in one direction
Autosomes
Directional Selection
Duplication
Vestigial structure
14. A DNA double helix is held together in the center by between nitrogenous bases
Chromosome mutation
Post -zygotic Mechanisms
hydrogen bonds
Genotype
15. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual
Testcross
Gene Pool
Stabilising selection
Phyletic Gradualism (anagenesis)
16. Gradual evolution within a lineage
DNA fingerprint
NIche Isolation
Sequential Evolution
Sedimentary Rock
17. The study relating the evolution of new charateristics to changes in the genes controlling development
Population
Evo Devo
Deme
Alleles
18. The gradual changes in gene frequencies in a population due to random events
Genome
Genetic Drift
Comparative anatomy
RNA polymerase
19. The region of the chromosome that holds the two sister chromatids together during mitosis
Phenotype
False RNA
Cytosine
Centromere
20. The evolutionary process by which a species becomes better suited to its niche.
Heterozygote
Dihybrid Cross
Gene frequency
Adaptation
21. Embryos of similar organisms have very similar early development indicating similar DNA at work
Polyploidy
Mesozoic era
Comparative Embryology
Testcross
22. Copying the code from DNA onto mRNA
Ice
Comparative embryology
Convergent Evolution
transcription
23. 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.
Genetic Drift
Convergent Evolution
Genome
Heterozygous
24. Movement of alleles into or out of a population due to the migration of individuals to or from the population
Pre -zygotic Mechanisms
Gene flow
Mendel's traits are now called _____ found on DNA
Precambrian era
25. Evolution resulting from small specific genetic changes that can lead to a new subspecies
Common Ancestor
Immigration
Geologic Evolution
Microevolution
26. The comparison of the structures of different organisms
Heterozygous
Comparative anatomy
Monophyletic
Natural Selection
27. Any preserved remains of an organism from the past. Usually found in sedimentary rock.
Gene Flow
Ecological Barrier
genes
Fossils
28. 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
Paleozoic era
Phenotype
Niche
polypeptide
29. Features that are superficially similar but have different modes of development
Analogous Features
Hybrid Infertility
Stasis
three
30. The number of times an allele appears in a population
Allele Frequency
genes
Centromere
Test Cross
31. A taxon originating from and including a single common ancestor
Monophyletic
Founder Effect
Precambrian era
that is complementary to a single strand of DNA
32. Organ that serves no useful function in an organism
clinC
hydrogen bonds
Bottle neck effect
Vestigial organs
33. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.
Fossils
Ice
Monohybrid Cross
Heritable variation
34. Hybrid is sterile so biologically unfit
Chiasma
Hybrid Infertility
Endemic
molecular evidence
35. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
Gene Pool
Comparative embryology
stop codon
Immigration
36. The environmental factors that favour certain phenotypes
Selection pressure
Directional Selection
Pentadactyl limb
cytoplasm
37. Selection for the ability to obtain a mate
Cast
Sexual Selection
Sex Chromosomes
Meiosis
38. Cross where you cross unknown genotype with a recessive
Heterozygous
Mutation
Disruptive Selection
Test Cross
39. Speciation preceded by a period of geographical isolation
Dihybrid Cross
Reproductive Isolation
body fossils
Allopatric Speciation
40. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.
Mate Selection
Semi - conservative replication
Species
Genetic Drift
41. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.
Heterozygote
Analogous structures
Vestigial structure
Adaptation
42. 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
Meiosis
Phenotype
rRNA
Mate Selection
43. Any agent that can cause a change in DNA
Selection pressure
Diploid
Mutagen
Monophyletic
44. 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.
mutation
Test Cross
Petrification
Founder effect
45. Mating of 2 oism that differ in 2 characters
Sub - species
Evolution
Hybrid
Dihybrid Cross
46. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Chromosomes
Homozygous
Fitness
Punnett Square
47. An ancestor that two or more descendants have in common
Sedimentary Rock
Common Ancestor
Autosomes
Recessive
48. 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
Analogous Structures (analogies)
Hybrid Breakdown
Ecological Barrier
amino acid
49. How often a particular gene occurs in the population
Gene
Divergent Evolution
Ring Species
Gene frequency
50. Transcrition occurs in the...
deoxyribonucleic acid
Post -zygotic Mechanisms
nucleus
Amber