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CSET Genetics And Evolution
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Subjects
:
cset
,
science
,
genetics
Instructions:
Answer 50 questions in 15 minutes.
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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. 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.
Ecological Barrier
ribose - phosphate - and a base
tRNA
Vestigial structure
2. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
Gene Pool
Paleozoic era
Mate Selection
Genotype
3. The backbone of DNA consist of...
Homologous Structures
Thymine
deoxyribose and phosphate
Comparative Embryology
4. 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
Mitosis
Chromatid
Analogous Structures (analogies)
its negative charge
5. An episode of large - scale extinction affecting many different groups of organisms within a short period of time
Environment
Mass Extinction
Behavioral (ethological) Isolation
Somatic
6. The number of times an allele appears in a population
Reproductive Isolation
Double Helix
Allele Frequency
Comparative Embryology
7. Process by which one species gives rise to two or more species
three
Speciation
DNA fingerprint
Phenotype
8. The movement of genes between populations as a result of mating of migration
genes
False genes
Heterozygote
Gene Flow
9. The movement of individuals into an area
Comparative Anatomy
Disruptive Selection
Evolution
Immigration
10. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome
Absolute dating
mRNA
Ecological (habitat) Isolation
Homologous structures
11. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.
homologous (Evolution Evidence)
molecular evidence
Directional Selection
thymine
12. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Convergent Evolution
Temporal Isolation
Punnett Square
Genetic Drift
13. 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.
mRNA
Double Helix
analogous (Evolution Evidence)
Ring Species
14. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.
Stasis
Bottle neck effect
Organic Evolution
DNA fingerprint
15. Any preserved remains of an organism from the past. Usually found in sedimentary rock.
Medel worked with _____
Fossils
Double Helix
codon
16. Evolution resulting from small specific genetic changes that can lead to a new subspecies
Microevolution
Double Helix
Mutagen
Sexual Selection
17. Is any chromosome that is not a sex chromosome.
Autosomes
Selection pressure
Germ
Allopatric Speciation
18. The region of the chromosome that holds the two sister chromatids together during mitosis
Clade
Amber
Centromere
Cast
19. Form of reproductive isolation in which two populations reproduce at different times
index fossil
Temporal Isolation
Natural Selection
Evo Devo
20. Group of similar organisms that can breed and produce fertile offspring
Test Cross
Immigration
Homologous Structures
Species
21. The comparison of the structures of different organisms
true
3 nucleotides
nucleotides
Comparative anatomy
22. Selection for the ability to obtain a mate
Mendel's Principle of Segregation
clinC
Sexual Selection
False genes
23. Dna moves during electrophoresis because of...
Ice
its negative charge
Insertion
Double Helix
24. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor
DNA fingerprint
Comparative embryology
transcription
Population
25. The formation of new species as a result of evolution
Speciation
Diploid
Heterozygous
Sympatric Speciation
26. Change in allele frequencies as a result of the migration of a small subgroup of a population
Duplication
Codon
geologic time scale
Founder Effect
27. A trait that masks the expression of another trait
Dominant
Homozygote
Cytosine
Fossil
28. An evolutionary 'branch' and its daughter 'twigs'
Environment
Phyletic Gradualism (anagenesis)
Clade
homologous (Evolution Evidence)
29. 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.
Phenotype
Rosalind Franklin
tRNA
Variation
30. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA
embryological evidence
Guanine
Hybrid
Sub - species
31. The study of the past and present distribution of species.
Biogeography
Independent assortment
true
Translocation
32. A codon is made of...
False genes
3 nucleotides
transcription
Pre -zygotic Mechanisms
33. The study relating the evolution of new charateristics to changes in the genes controlling development
geologic time scale
Locus
Evo Devo
transcription
34. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
true
Chromosomes
Adaptation
Punnett Square
35. What does DNA stand for...
Ecological (habitat) Isolation
deoxyribonucleic acid
The cell uses information from mRNA to produce proteins
hydrogen bonds
36. Building block of a protein
nucleotide
amino acid
replication
Gene Pool
37. Organ that serves no useful function in an organism
amino acids
anticodon
Haploid/Monoploid
Vestigial organs
38. A taxon originating from and including a single common ancestor
Allopatric Speciation
Monophyletic
embryological evidence
Endemic
39. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
hydrogen bonds
thymine
Natural Selection
Adenine
40. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long
DNA
Double Helix
Evo Devo
genes
41. The study of the structures of different organisms - looking at homologous parts
genes
Stasis
Comparative Anatomy
Gene flow
42. Selection against one end of a range of variation - resulting in a progressive change in allele frequency
three
Directional Selection
Adaptive Radiation
Species
43. Which type of Rna functions as a blue print of the genetic code
mRNA
Natural Selection
Allele Frequency
homologous (Evolution Evidence)
44. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value
Chargaff
Gene flow
Stabilising
Stabilising selection
45. Are noncoding sequences in the gene that are removed from RNA after transcription
Histone
Independent assortment
introns
Comparative Anatomy
46. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.
Genotype
Monohybrid
Germ
Temporal Isolation
47. Speciation which does not involve a period of geographical separation
Adaptation
Sympatric Speciation
Precambrian era
Founder Effect
48. Independent segregation of genes during the formation of gametes
Germ
Bottleneck Effect
Genotype
Independent assortment
49. Gradual evolution within a lineage
Dominant
Mendel's Principle of Segregation
molecular evidence
Sequential Evolution
50. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest
Mutation
Natural Selection
Medel worked with _____
Gamete Isolation
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