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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. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






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






4. Organ that serves no useful function in an organism






5. Trait evolves overtime; NO common ancestry






6. DNA is made of...






7. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






8. The gradual changes in gene frequencies in a population due to random events






9. Process in which DNA is duplicated






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






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






12. 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






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






14. How often a form of a gene appears in a gene pool






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






16. Copying the code from DNA onto mRNA






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






18. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






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






20. Another name for a gene






21. Separates DNA by size






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






23. Name for oism with one dominant and one recessive allele






24. Pea plants






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






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






27. A change or error in the DNA sequence






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






29. A group of organisms of the same species occupying a given area.






30. Any agent that can cause a change in DNA






31. 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.






32. Mating of 2 oism that differ in 2 characters






33. A change in the base sequence of a gene






34. Movement of organisms ro of from a population






35. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






36. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






37. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






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






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






40. The comparison of the structures of different organisms






41. Chromosomes are collections of many






42. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






43. 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.






44. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






45. Change in allele frequencies as a result of the migration of a small subgroup of a population






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






47. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






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






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






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