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






2. A combining of genes or characters different from what they were in the parents






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






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






5. Is active during transcription






6. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






7. Determined the concept of complementary base pairing






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






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






10. Independent segregation of genes during the formation of gametes






11. Visual expression of a trait






12. Gene

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13. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






14. The preserved remains or traces of an organism that lived in the past






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






16. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






17. Hybrid is sterile so biologically unfit






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






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






20. A limb with five digits (fingers)






21. 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.






22. Building block of a protein






23. Chromosomes are collections of many






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






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






26. Proteins are made of...






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






28. Periods of rapid evolution punctuated by periods of little change






29. 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






30. A nucleotide of RNA is made of...






31. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






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






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






34. DNA is made of...






35. Closely related species occupying different habitats - niches preventing them from interbreeding






36. During transcription an RNA molecule is formed






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






38. Human - like species that existed millions of years ago as witnessed through fossil evidence.






39. Process in which DNA is duplicated






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






41. What does DNA stand for...






42. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






43. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






45. Actual remains of an organism such as bones - teeth - shells - etc.






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






47. 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.






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






49. Process by which one species gives rise to two or more species






50. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.