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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. Transfer RNA; type of RNA that carries amino acids to the ribosome






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






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






4. Ribosomal RNA; type of RNA that makes up part of the ribosome






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






6. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






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






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






9. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






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






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






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






13. Change to a chromosome in which a fragment of the chromosome is removed






14. A change in the base sequence of DNA; the ultimate source of new alleles






15. T or F a codon consist of three nucleotides






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






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






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






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






20. What is one benefit for having two strands of DNA?






21. Is active during transcription






22. Determined the concept of complementary base pairing






23. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






24. A mutation in which one nucleotide is replaced by another nucleotide






25. Mutation where an extra base is added






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






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






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






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






30. Movement of alleles into or out of a population due to the migration of individuals to or from the population






31. Three mRNA nucleotides that code for a specific amino acid






32. 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.






33. 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.






34. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






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






36. Pea plants






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






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






39. Chromosomes are collections of many






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






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






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






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






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






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






46. Two alternative forms of a gene e.g Tall vs Short






47. Organ that serves no useful function in an organism






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






49. DNA that is coiled around proteins






50. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups