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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 sum total of an organism's requirements; its way of life






2. Selection for the ability to obtain a mate






3. Which structure contains anticodons






4. Ribosomes are made of...






5. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






6. A codon is made of...






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






8. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






9. All the factors in an organism's surroundings that can potentially affect it






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






11. Group of similar organisms that can breed and produce fertile offspring






12. Synonym for protein; chain of amino acids






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






14. 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.






15. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






16. Human - like species that existed millions of years ago as witnessed through fossil evidence.






17. The adaptive increase in pigmentation as a result of human - induced pollutants






18. 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.






19. T or F A cloned organism has the same proteins as another organism






20. A change or error in the DNA sequence






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






22. The gradual changes in gene frequencies in a population due to random events






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






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






25. Trait evolves overtime; NO common ancestry






26. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






27. 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






28. Genes contain instructions for assembling






29. The evolutionary history/geneology of a group of organisms (a tree thingy)






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






31. Translation occurs in the...






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






33. 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.






34. The complete genetic material contained in an individual






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






36. Group of individuals of the same species that live in the same area






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






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






39. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






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.






41. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






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






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






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






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






46. Situation in which allele frequencies remain constant






47. Independent segregation of genes during the formation of gametes






48. Gradual evolution within a lineage






49. Closely related species occupying different habitats - niches preventing them from interbreeding






50. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.