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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. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






2. Change to a chromosome in which a fragment of the chromosome is removed






3. Form of reproductive isolation in which tere are differences in species courtship behavior






4. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






5. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






6. Movement of alleles into or out of a population due to the migration of individuals to or from the population






7. Innate trait; shared ancestry






8. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






9. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






10. Gene

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11. The independant evolution of similar traits - starting from a similar ancestral condition






12. Name for oism with one dominant and one recessive allele






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






14. Two alternative forms of a gene e.g Tall vs Short






15. The movement of genes between populations as a result of mating of migration






16. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






17. Recognize and cut DNA at specific sequences usually palindromes






18. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches






19. A DNA double helix is held together in the center by between nitrogenous bases






20. The final product of transcription is...






21. Change in allele frequencies as a result of the migration of a small subgroup of a population






22. The complete genetic material contained in an individual






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






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






25. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






26. A nucleotide of RNA is made of...






27. Evolution resulting from small specific genetic changes that can lead to a new subspecies






28. DNA that is coiled around proteins






29. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






30. 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






31. Any agent that can cause a change in DNA






32. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






33. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






34. 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






35. Situation in which allele frequencies remain constant






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






37. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






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






39. Different alleles for a gene






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






41. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






42. A pairing where the parent plants differ in only one character.






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






44. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






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






46. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






47. Found only in that country






48. 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.






49. A change in the base sequence of a gene






50. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number