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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. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






2. Trait where heterozygous is a blending of two alleles






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






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






5. 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






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






7. The final product of transcription is...






8. Condition in which an organism has extra sets of chromosomes






9. 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






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






11. A unique combination of traits that are passed down from one generation to another.






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






13. How often a particular gene occurs in the population






14. Large - scale evolutionary changes that take place over long periods of time






15. The specific location of a gene on a chromosome






16. Ribosomes are made of...






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






18. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






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






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






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






22. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






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






24. Form of reproductive isolation in which two populations reproduce at different times






25. The preserved remains or traces of an organism that lived in the past






26. Transcrition occurs in the...






27. Any agent that can cause a change in DNA






28. A geographic gradient in the extent to which a character is developed in a species






29. When competition causes two closely related species to become more different in regions where their ranges overlap






30. A distinct population of a species that varies from other populations of the same species.






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






32. When F1 is fully fertile but F2 has low fertility (rice - cotton)






33. Another term for pure breeding






34. 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.






35. The movement of individuals into an area






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






37. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






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






39. 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






40. The region of the chromosome that holds the two sister chromatids together during mitosis






41. The backbone of DNA consist of...






42. 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.






43. Gene

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






45. The study of the structures of different organisms - looking at homologous parts






46. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






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






48. Synonym for protein; chain of amino acids






49. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






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