General Biology I, Take-Home Exam 3

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This is a take-home exam / study guide 3. I expect you to use your references. This exam may be collaborative. 'Collaborative' means that a group of students (2, 3 or 4 students -- not the whole class) may complete the exam, or parts of the exam, working together. However, each individual should prepare separately for the exam. All students should obtain the necessary information to answer the questions.

Do NOT encourage some individuals to passively receive information and idea!
Each individual is expected to contribute to the discussion. Students who do not actively participate in the group may be disciplined according to the class syllabus section regarding cheating.

Except for the online "hints and learning tools" given students on the Learning Tools page and the online Study Day page, you will NOT receive any help from your instructor!

Below fill in the names of the students in your study group, (print legibly). NOT MORE THAN 4 PERSONS!


1. Your name: ........................................................................................... 2. ...........................................................................................

3. ........................................................................................... 4. ...........................................................................................

Check-mark or circle “the bubble” if you did NOT collaborate with anyone

Each student will hand in to the instructor, in a plastic sheet protector, UNIQUE, INDIVIDUAL, ORIGINAL exam documents, (1) Exam (with the answers circled), (2) a scantron form (with the answers bubbled in), (3a) Unit III Study Guides (Genetics, DNA, Evolution), (3b) two copies of the Unit III Memorization Quizzez (DNA, and the Evolution Time scale), and (3c) the WebCT discussion Evolution 2 Worksheet.

If any item is missing, points will be deducted. (The answers on the multiple choice part of the exam document and the scantron form should be the same, but the answers on the scantrons will count if there is a difference.) Note that scantron erasures are the responsibility of the student. No grades will be changed due to a failure to erase correctly. If the grader cannot read the answers on the attached documents 3a, 3b, or 3c, 50 - 80 percent of the points will be deducted; if some questions are not answered on the attached documents 3a, 3b, or 3c, 50 - 80 percent of the points will be deducted.

If students do not turn in one of the documents -- as was announced in class when exam 1 was returned, three times the points as deducted for exam 1 will be deducted.

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In addition, the student's signatures on the attendance rosters after the lectures/labs for Meiosis, Genetics, and DNA, will be part of the exam grade. The attendance roster signature for each lecture/lab will be worth 2 points, for a total of 6 points on the exam. Unit 3, Genetics, is rather challenging. During the semester this instructor has noticed students "disappearing" early, sometime after turning in the exam and taking the memorization quizzes. Students are here to learn, which means participating in the class as intended by the instructor -- not to sneak out of the classroom to see if the instructor notice...

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I have read and I understand the instructions
(if you have not understood the instructions, do NOT take the test without first talking to the instructor):


.............................................................................................
STUDENT NAME (PRINT)

.............................................................................................
(SIGNATURE)

CLASS TIME: .............................. DATE: ...................................


Read the complete question CAREFULLY before answering! Mark your answers on the scantron form. Scantron erasures are the responsibility of the student. No grades will be changed due to a failure to erase correctly.

NOTE: If you are working this take-home test ahead of the class, I strongly recommend that you don't attempt the genetic cross questions -- where you have to solve genetic trait crosses (unless you have previous exposure to genetic), until it has been covered in class.

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Note: Thank you for using the copy of the exam posted online! It is posted online for students convenience and success! You may request a hard-copy of this exam, but the hard copy will not be available until AFTER the GENETIC classroom lecture (one week before the exam due date) and must be pre-arranged with the instructor via WebCT e-mail BEFORE the genetic lecture.

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Make sure your name is on BOTH sides of the scantron form! Good luck!

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Answer A if a statement is true. Answer B if a statement is false.

01. T(a) F(b) The building blocks of DNA are amino acids.

02. T(a) F(b) Diploid eukaryotic organisms have two sets of chromosomes, one from each parent.

03. T(a) F(b) An acid has a pH above 7 (up to pH 14).

04. T(a) F(b) Normal human body temperature is 98.6°C.

05. T(a) F(b) For dominant traits to be expressed the alleles must be homozygous.

06. T(a) F(b) A person with one X chromosome and one Y chromosome is abnormal.
(abnormal = not normal, deviant -- Am. Heritage Dictionary)

07. T(a) F(b) A person with the genetic trait DD, mating with a person with Dd, cannot receive offspring with dd.

08. T(a) F(b) Red & green color blindness is a sex-linked trait.

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Multiple choice: Choose the most correct answer.

09. An egg produced by a human female contains
A. two Y chromosomes
B. two X chromosomes
C. one Y chromosome
D. one X chromosome
E. None of the above


10. Down syndrome is the result of
A. independent assortment
B. genetic linkage
C. crossing-over
D. incomplete dominance
E. nondisjunction

11. Number of chromosomes in human sex cells?
A. 1
B. 2
C. 22
D. 23
E. 46

12. Number of X chromosomes in the cells of a human female?
A. 1
B. 2
C. 22
D. 23
E. 46

13. Fill in the blanks: A cell that contains eight chromosomes and is undergoing mitosis will produce __________ daughter cell (s); each daughter cell will contain _________ chromosomes
A. two ; eight
B. two ; four
C. four ; four
D. one ; eight
E. one ; four

14. The environmentally and genetically determined observable physical appearance of an organism.
A. Allele
B. Gene
C. Genotype
D. Phenotype
E. None of the above

15. Alternative forms of a gene for a particular characteristic.
A. Allele
B. Gene
C. Genotype
D. Phenotype
E. None of the above

16. 2n
A. haploid number
B. diploid number
C. in humans 23
D. B & C
E. None of the above

17. Pattern of inheritance in which a particular trait has more than two alleles, although each individual has only two of these alleles, e.g., ABO blood types.
A. multiple alleles
B. incomplete dominance
C. polygenic inheritance
D. nondisjunction
E. disjunction

18. An allele that expresses itself and masks the effects of the other allele for the trait (this allele masks the homologous allele).
A. Dominant allele
B. Recessive allele
C. X-linked allele
D. wild type
E. A, C, and D

19. In simple genetic inheritance, with two alleles only, the trait is determined by:
A. the type of alleles received from the parents
B. the environment
C. the interaction between these alleles
D. A and C are correct
E. A, B, and C are correct

20. An allele that does not express itself (does not show up) when the homologous allele is present.
A. Dominant allele
B. Recessive allele
C. X-linked allele
D. Wild type
E. A, C, and D

21. An example of a homozygous condition is
A. aa
B. Aa
C. AA
D. All of the above
E. A and C

22. An example of a heterozygous condition is
A. aa
B. Aa
C. AA
D. All of the above
E. A and C

23. For all cells, the molecule of inheritance.
A. DNA
B. mRNA
C. rRNA
D. tRNA
E. hemoglobin

24. Both alleles for the trait are identical.
A. Homozygous trait
B. Allele
C. Dominant allele
D. Recessive allele
E. Heterozygous trait

25. The probability of parents w. genotypes Rr x rr having an offspring w. the genotype rr is
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

26. The probability for parents w. genotypes EE x Ee (where E = free earlobes) having an offspring w. attached earlobes (e) is
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

27. The probability of parents w. genotypes Ss x Ss having an offspring w. the genotype ss is:
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

28. The probability of parents w. genotypes Bb x Bb having an offspring w. the homozygous dominant genotype is
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

29. In snapdragons, heterozygotes have pink flowers, whereas the two homozygotes have red flowers and white flowers. (This is called incomplete dominance.) When plants with red flowers are crossed with plants with white flowers, what proportions of the offspring will have pink flowers?
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

30. In a wild flower, the genotype Bb (heterozygous) has light blue flowers, whereas the dominant BB has dark blue flowers and the recessive bb has white flowers. (Like snapdragons, this is called incomplete dominance.) When plants with dark blue flowers are crossed with plants with white flowers, what proportions of the offspring will have light blue flowers?
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

31. In fruit flies the wing trait for normal wing (N) is dominant, and "wingless" (n) (vestigial wing, i.e., they cannot fly) is recessive. Two fruit flies fell in love and decided to make passionate love on a banana. Both flies were interested in what kind of offspring they might have. The genotypes of both flies were heterozygous for the normal wing trait. They consulted a fruit fly geneticist and asked what proportion of their offspring would be able to fly?
A. zero
B. 25%
C. 50%
D. 75%
E. 100%

32. In ABO blood type pattern of inheritance (multiple alleles: in which a particular trait has 3 or more alleles, although each individual has only two of these alleles) the possible alleles are
A. I^A, I^B, i
B. I^AI^A, I^BI^B, I^AI^B, I^Ai, I^Bi, ii
C. HbA, HbS
D. Aⁱ, Bⁱ, 0ⁱ
E. A, B, AB, 0

33. A woman with blood type 0 has a child with the genotype ii. The father has the blood type A. The genotypes of the parents are
A. father I^AI^A, mother ii
B. father I^Ai, mother ii
C. father ii, mother I^Ai
D. father ii, mother I^AI^A
E. father ii, mother ii

34. If one parent has type A blood and the other parent has type B, then which of the following is possible in the children?
A. only AB
B. A and AB
C. B and AB
D. A, B, AB, and 0
E. only 0

35. The sugar in DNA is
A. Glucose
B. Fructose
C. Galactose
D. Ribose
E. Deoxyribose

36. Demonstrate that you understand DNA replication by matching Guanine with the correct base below
A. Adenine
B. Thymine
C. Guanine
D. Uracil
E. Cytosine



37. Demonstrate that you understand DNA replication by matching Thymine with the correct base below
A. Adenine
B. Thymine
C. Guanine
D. Uracil
E. Cytosine

38. Demonstrate that you understand DNA transcription by matching Adenine with the correct base below
A. Adenine
B. Thymine
C. Guanine
D. Uracil
E. Cytosine

39. Demonstrate that you understand DNA transcription by matching Thymine with the correct base below
A. Adenine
B. Thymine
C. Guanine
D. Uracil
E. Cytosine

40. One triplet nucleotide on mRNA is called a/an
A. code
B. anti-codon
C. codon
D. amino acid sequence
E. non of the above is correct

41. One triplet nucleotide on tRNA is called a/an
A. code
B. anti-codon
C. codon
D. amino acid sequence
E. non of the above is correct

42. If the triplet code on DNA is ATC, the codon is
A. ATC
B. AUC
C. TAG
D. UAG
E. AUG

43. If the triplet code on DNA is ATC, the anticodon is
A. ATC
B. AUC
C. TAG
D. UAG
E. AUG

44. Select the correct sequence:

A. Protein - transcription - DNA - translation - RNA
B. DNA - translation - RNA - transcription - Protein
C. DNA - replication - RNA - translation - Protein
D. DNA - transcription - RNA - translation - Protein
E. RNA - transcription - DNA - translation - Protein

45. Macromolecule with monosaccharides (all or in part) as buildingblocks?
A. carbohydrates
B. proteins
C. carbohydrates and proteins
D. nucleic acids
E. carbohydrates and nucleic acids

46. Correct order of the cell cycle
A. M - G1 - S - G2
B. G1 - M - G2 - S
C. G1 - S - G2 - M
D. A and C
E. A, B, and C

47. Inherited as simple inheritance
A. AB0 Blood Groups
B. Ear Lobes
C. Red/Green Color Blindness
D. Sickle Cell Anemia
E. Down Syndrome

48. Inherited as complex gene pattern inheritance -- incomplete dominance
A. AB0 Blood Groups
B. Ear Lobes
C. Red/Green Color Blindness
D. Sickle Cell Anemia
E. Down Syndrome

49. Inherited as complex chromosomal pattern inheritance -- non-disjunction
A. AB0 Blood Groups
B. Ear Lobes
C. Red/Green Color Blindness
D. Sickle Cell Anemia
E. Down Syndrome

50. Inherited as complex chromosomal pattern inheritance -- sex linked
A. AB0 Blood Groups
B. Ear Lobes
C. Red/Green Color Blindness
D. Sickle Cell Anemia
E. Down Syndrome

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Short answer: On-line Study Guides

Print out one of each of the on-line study guides (on the learning tools page on Dr. Nilsson’s CyberOffice). Answer ALL questions. Spelling must be correct. Handwriting must be legible. (If handwriting is not CLEARLY legible on ALL answers, the study guide will not be grades and you will receive a zero on that part of the exam. Your writing is intended to communicate something to a reader, use a typewriter if you have such poor handwriting that no one can read what you communicate.) Note: All answers do not necessarily have to be answered correctly, as long as you have made a serious attempt to answer each question correctly -- and left NO blanks!!! Staple all study guides in order to the exam. Students must turn in their OWN unique answered study guide. Photocopies are NOT allowed.

Short answer: Memorization quizzes.

Print out TWO of each of the memorization quizzes (links are on the quiz page on the General Biology Hub). Fill in the answers. Spelling must be correct. Handwriting must be legible. (If handwriting is not CLEARLY legible on ALL answers, the study guide will not be grades and you will receive a zero on that part of the exam. Your writing is intended to communicate something to a reader, use a typewriter if you have such poor handwriting that no one can read what you communicate.) Staple all quizzes in order to the exam. Student must turn TWO (2) unique copies of EACH of their OWN unique quiz with handwritten answers. Photocopies are NOT allowed.

WebCT Evolution 2 bulletin board discussion worksheet.

See the worksheet instructions for details.

In addition, the student's signatures on the attendance rosters after the lectures/labs for Meiosis, Genetics, and DNA, will be part of the exam grade.

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Comment on handwriting and spelling on the attached assignments: This instructor does normally not take off points for "normal" poor handwriting on the On-line Study Guides, the Memorization Quizzes, or the Evolution 2 Worksheet. Many students have taken time to write answers in a neat handwriting and being careful with the spelling. If you think you learn better by writing like an ungulate (e.g. a pig) when you study at home -- go ahead. However, in order to be fair to students spending time to write neatly, if a student writes with a "sloppy", illegible handwriting on assignments -- for whatever reason, including making a point to protest this professors handwriting policy, the student will not receive any points for that particular work. Handwriting on the Comprehensive Study Guides must always be legible. No exceptions. Since this is a take-home exam, you have PLENTY of time to write neatly when you answer the questions at home. I must be able to read your answers with normal reading. Make arrangements for a typewriter with STC, if you don't own one, or write so I can read your answers within a normal time frame for grading, and without having to guess what you write. If you are trying to mask poor spelling by writing like an ungulate -- a common reason for using poor handwriting, learn how to spell or get a dictionary.

As you already know from postings online I am not the only professor with this teaching philosophy:

"You're right. This is not an English class. One reason English classes exist is so that you'll be able to write in classes like this. You're a college student; I expect you to write like one." Sue Frantz, Psychology Professor, Highline Community College.

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You have reached the end of the exam!

Make sure your name is on the first page of this exam! Make sure your name is on BOTH sides of the scantron form!

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