Test your basic knowledge |

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 active during transcription






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






3. Found only in that country






4. 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.






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






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






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






8. 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.






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






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






11. A trait that masks the expression of another trait






12. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.






13. Dna moves during electrophoresis because of...






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






15. Periods of little adaptive change






16. Proteins are made of...






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






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






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






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






21. Speciation which does not involve a period of geographical separation






22. The backbone of DNA consist of...






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






24. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






25. Determined the complete double helical structure of DNA






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






27. Which type of Rna functions as a blue print of the genetic code






28. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






29. 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.






30. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






31. Method of replication that implies that each new strand of DNA is half original and half new






32. The formation of new species as a result of evolution






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






34. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






35. Hybrid is sterile so biologically unfit






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






37. Gradual evolution within a lineage






38. 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






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






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






41. Which structure contains anticodons






42. Speciation preceded by a period of geographical isolation






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






44. Is any chromosome that is not a sex chromosome.






45. How many codons are needed to specify three amino acids






46. 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.






47. Disappearance of a species from all parts of its geographical range






48. Another term for pure breeding






49. DNA that is coiled around proteins






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