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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. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






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






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






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






5. Building block of a protein






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






7. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






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






9. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






10. Evolution resulting from small specific genetic changes that can lead to a new subspecies






11. Mating of 2 oism that differ in 2 characters






12. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






13. Separation of species or populations so that they cannot interbreed and produce fertile offspring






14. Chromosomes are collections of many






15. 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.






16. T or F A cloned organism has the same proteins as another organism






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






18. 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






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






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






21. Visual expression of a trait






22. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






23. A limb with five digits (fingers)






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






25. Which structure contains anticodons






26. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






27. 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






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






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






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






31. 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.






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






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






34. Selection for the ability to obtain a mate






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






36. Dna moves during electrophoresis because of...






37. A trait that masks the expression of another trait






38. A unique combination of traits that are passed down from one generation to another.






39. Innate trait; shared ancestry






40. 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.






41. Predicts the possible outcome of a genetic cross.






42. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






43. 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






44. Nucleotides that control which amino acids are added during protein synthesis






45. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






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






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






48. How often a particular gene occurs in the population






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






50. 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.