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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. Natural selection that causes the frequency of a particular allele to move in one direction






2. Found only in that country






3. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






4. Movement of organisms ro of from a population






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






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






7. 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.






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






9. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






10. Organ that serves no useful function in an organism






11. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






12. The evolutionary process by which a species becomes better suited to its niche.






13. A codon is made of...






14. Mutation where an extra base is added






15. Dna moves during electrophoresis because of...






16. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






17. Visual expression of a trait






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






19. 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.






20. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






21. Change in a DNA sequence that affects genetic information






22. 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.






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






24. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






25. Recognize and cut DNA at specific sequences usually palindromes






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






27. The study of the past and present distribution of species.






28. 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.






29. Synonym for protein; chain of amino acids






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






31. A population partially isolated from other populations of the same species






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






33. The comparison of the structures of different organisms






34. Proteins are made of...






35. DNA is made of...






36. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






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






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






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






40. 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






41. These prevent fertilization between species e.g. diff breeding season - mating behaviour






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






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






44. Embryos of similar organisms have very similar early development indicating similar DNA at work






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






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






47. Trait evolves overtime; NO common ancestry






48. A change in the base sequence of a gene






49. The type of environment in which an organism or group normally lives or occurs






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