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






2. 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






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






4. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






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






6. Different alleles for a gene






7. 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.






8. Which type of Rna functions as a blue print of the genetic code






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






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






11. The study relating the evolution of new charateristics to changes in the genes controlling development






12. Situation in which allele frequencies remain constant






13. The movement of genes between populations as a result of mating of migration






14. Trait where heterozygous is a blending of two alleles






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






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






17. Features that are superficially similar but have different modes of development






18. Condition in which an organism has extra sets of chromosomes






19. Speciation preceded by a period of geographical isolation






20. The complete genetic material contained in an individual






21. A body cell






22. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






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






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






26. The comparison of the structures of different organisms






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






28. Gene

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29. A limb with five digits (fingers)






30. How often a particular gene occurs in the population






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






32. Predicts the possible outcome of a genetic cross.






33. An ancestor that two or more descendants have in common






34. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






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






37. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






38. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






39. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






41. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






42. 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.






43. Pea plants






44. Translation occurs in the...






45. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






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






47. 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






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






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






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