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






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






3. Another term for pure breeding






4. 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.






5. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






6. What happens during the process of translation






7. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






8. A nucleotide of RNA is made of...






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






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






11. Determined the complete double helical structure of DNA






12. Dna moves during electrophoresis because of...






13. A trait that masks the expression of another trait






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






15. The banding pattern of a persons DNA after being cut and run on gel is called






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






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






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






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






20. Hybrid is sterile so biologically unfit






21. DNA is made of...






22. Embryos of similar organisms have very similar early development indicating similar DNA at work






23. The enzyme that binds to the promoter region of a gene during transcription is called...






24. Selection for the ability to obtain a mate






25. What does DNA stand for...






26. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






27. Pea plants






28. Change to a chromosome in which part of the chromosome is repeated






29. Trait where heterozygous is a blending of two alleles






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






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






32. The comparison of the structures of different organisms






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






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






35. Identical alleles for a gene






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






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






38. Genes contain instructions for assembling






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






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






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






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






43. One of the identical rods of a chromosome.






44. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






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






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






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






48. T or F a codon consist of three nucleotides






49. Change in a DNA sequence that affects genetic information






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