Test your basic knowledge |

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






2. Because of base pairing in DNA the amount of






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






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






5. How often a particular gene occurs in the population






6. 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.






7. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






8. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






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






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






11. Movement of organisms ro of from a population






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






13. Synonym for protein; chain of amino acids






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






15. Is found in DNA






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






17. Separates DNA by size






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






19. DNA that is coiled around proteins






20. Organ that serves no useful function in an organism






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






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






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






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






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






26. Copying the code from DNA onto mRNA






27. 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






28. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






29. Situation in which allele frequencies remain constant






30. Impression made from a organism in soft material such as sand or mud.






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






32. Innate trait; shared ancestry






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






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






35. Identical alleles for a gene






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






37. Process in which DNA is duplicated






38. 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.






39. Building block of a nucleic acid (DNA and RNA)






40. Determined the complete double helical structure of DNA






41. A nucleotide of RNA is made of...






42. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






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






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






45. Even if the gametes of the two species meet - fertilization does not occur






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






47. Mating of 2 oism that differ in 2 characters






48. Is active during transcription






49. One of the identical rods of a chromosome.






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