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






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






3. One of the identical rods of a chromosome.






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






5. The adaptive increase in pigmentation as a result of human - induced pollutants






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






7. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






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






9. The region of the chromosome that holds the two sister chromatids together during mitosis






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






11. A trait that masks the expression of another trait






12. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






13. A change or error in the DNA sequence






14. Innate trait; shared ancestry






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






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






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






18. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






19. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






20. Form of reproductive isolation in which tere are differences in species courtship behavior






21. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






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






23. Synonym for protein; chain of amino acids






24. Hybrid is sterile so biologically unfit






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






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






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






28. Periods of little adaptive change






29. Consists of all genes - including all the different alleles - that are present in a population






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






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






32. Recognize and cut DNA at specific sequences usually palindromes






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






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






35. 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






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






37. During transcription an RNA molecule is formed






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






39. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






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






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






43. Which structure contains anticodons






44. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






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






46. A body cell






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






48. The number of times an allele appears in a population






49. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






50. 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