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






2. A codon is made of...






3. How often a particular gene occurs in the population






4. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






5. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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6. What happens during the process of translation






7. 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






8. Selection acting against the middle of a range of variation






9. Consists of all genes - including all the different alleles - that are present in a population






10. Organ that serves no useful function in an organism






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






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






13. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






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






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






16. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






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






18. The study relating the evolution of new charateristics to changes in the genes controlling development






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






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






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






22. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






23. Another term for pure breeding






24. Any agent that can cause a change in DNA






25. Pea plants






26. Speciation preceded by a period of geographical isolation






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






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






29. Copying the code from DNA onto mRNA






30. A taxon originating from and including a single common ancestor






31. Features that are superficially similar but have different modes of development






32. T or F If a nucleic acid contain uracil it is DNA






33. Chromosomes are collections of many






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






35. Another name for a gene






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






37. Trait evolves overtime; NO common ancestry






38. Translation occurs in the...






39. Determined the concept of complementary base pairing






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






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






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






43. Process in which DNA is duplicated






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






45. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






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






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






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






49. DNA that is coiled around proteins






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