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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. Movement of organisms ro of from a population






2. A unique combination of traits that are passed down from one generation to another.






3. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






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






5. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






6. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






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






8. Change in a DNA sequence that affects genetic information






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






10. Synonym for protein; chain of amino acids






11. Hybrid is sterile so biologically unfit






12. When zygote does not complete development or is physically weaker than normal






13. Transcrition occurs in the...






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






15. Process in which DNA is duplicated






16. The study of the structures of different organisms - looking at homologous parts






17. A change in the base sequence of a gene






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






19. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






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






21. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






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






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






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






25. T or F a codon consist of three nucleotides






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






27. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






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






29. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






30. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






31. 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.






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






33. 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






34. Genes contain instructions for assembling






35. 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






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






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






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






39. The final product of transcription is...






40. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






42. A codon is made of...






43. A trait that masks the expression of another trait






44. Innate trait; shared ancestry






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






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






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






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






49. Independent segregation of genes during the formation of gametes






50. A distinct population of a species that varies from other populations of the same species.