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CSET Genetics And Evolution

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. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






2. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






3. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






4. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






5. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






6. Building block of a protein






7. A base found in DNA (but not in RNA). This base pairs with Adenine.






8. Building block of a nucleic acid (DNA and RNA)






9. The final product of transcription is...






10. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






11. The enzyme that binds to the promoter region of a gene during transcription is called...






12. A copy of a gene is made during a process called this






13. Synonym for protein; chain of amino acids






14. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






15. A group of organisms of the same species occupying a given area.






16. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






17. How often a form of a gene appears in a gene pool






18. T or F If a nucleic acid contain uracil it is DNA






19. Evolution of living things - based on evidence from the past and present.






20. A mutation in which one nucleotide is replaced by another nucleotide






21. An evolutionary 'branch' and its daughter 'twigs'






22. Separation of species or populations so that they cannot interbreed and produce fertile offspring






23. Gradual evolution within a lineage






24. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






25. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






26. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






27. The movement of individuals into an area






28. Is the evolutionary process whereby a population becomes better suited to its habitat






29. Are noncoding sequences in the gene that are removed from RNA after transcription






30. Periods of rapid evolution punctuated by periods of little change






31. The specific location of a gene on a chromosome






32. Proteins are made of...






33. One of the identical rods of a chromosome.






34. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






35. The structure on a tRNA molecule that allows it interact with an mRNA molecule






36. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






37. Used x ray cyrstallography to create an image of DNA






38. 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






39. Process by which a ribosome uses the code on mRNA to make proteins






40. A limb with five digits (fingers)






41. Breeding organisms with specific traits in order to produce offspring with identical traits






42. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






43. 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.






44. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






45. Situation in which allele frequencies remain constant






46. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






47. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






48. Actual remains of an organism such as bones - teeth - shells - etc.






49. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






50. During transcription an RNA molecule is formed