Portage Learning Genetics BIOL 210/ BIOD 210
Module 6 Exams; All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 210/ BIOD 210
Course Title: Genetics
Exam: Module 6
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
,1. True/False
Question: A Chromosomal Ablation Is An Alteration To The Chromosome That Results
In A Change To The Total Number Of Chromosomes, Deletions Or Additions To The
Chromosome, Or Even Complete Rearrangement Of Chromosomal Segments.
Choices:
True
False
ANS. False
Explanation: Chromosomal Ablation Is Not A Commonly Used Term For Total Changes
In Chromosomes; This Statement Is Overly Broad And Inaccurate.
2. True/False
Question: Sex Chromosomes Can Occur In Pairs But Also Exist Alone With No
Phenotypic Consequence.
Choices:
True
False
ANS. False
Explanation: Presence Or Absence Of Sex Chromosomes Typically Has Phenotypic
Consequences, E.G., Turner Syndrome (XO).
3. True/False
,Question: Trisomy And Monosomy In Autosomal Chromosomes Are Generally Not
Tolerated In Animals Or Plants.
Choices:
True
False
ANS. True
Explanation: Most Autosomal Trisomies Or Monosomies Are Lethal; Few Exceptions
Exist.
4. Short Answer
Question: What Is The Only Trisomy Disorder In Which Individuals Routinely Live
Longer Than One Year? The Incidence Of The Disorder Seems To Increase With An
Increased Age In Which Parent.
ANS.
Disorder: Down Syndrome
Parent: The Mother
5. True/False
Question: Individuals That Are Afflicted With Down Syndrome Typically Exhibit Only
A Subset Of The Stereotypical Characteristics Of The Disorder.
Choices:
True
False
, ANS. True
Explanation: Not All Individuals With Down Syndrome Show All Classical Features.
6. Short Answer
Question: The DSCR Region Thought To Be Typically Responsible For The Down
Syndrome Phenotype Is Located On Chromosome:
ANS. 21
7. Short Answer
Question: Why Do Researchers Think That Individuals With Down Syndrome Are
Protected From Cancers That Cause Solid Tumors?
ANS. Because Of The Gene DSCR1 That Encodes For A Protein That Blocks The
Vascular Endothelial Growth Factors. The Tumors Can't Grow When This Function Is
Blocked.
8. Short Answer
Question: Noninvasive Prenatal Genetic Screening Allows A Mother To Donate A
Sample Of ____. This Blood Is Used To Establish A _____ To Determine The Risks Of
Genetic Disorders.
ANS. Blood; Karyotype
9. Short Answer
Question: What Are The Current Thoughts On Why The Incidence Of Down Syndrome
Increases Drastically After Age 40 In The Mother?
ANS. The Eggs Undergo Meiosis I In A Female Fetus, And Then Are Arrested Until The
Female Goes Through Puberty. A Female That Is 40 Years Old Has Eggs That Are 25
Module 6 Exams; All Versions Latest Update/ Verified
Institution: Portage Learning
Course Code: BIOL 210/ BIOD 210
Course Title: Genetics
Exam: Module 6
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
,1. True/False
Question: A Chromosomal Ablation Is An Alteration To The Chromosome That Results
In A Change To The Total Number Of Chromosomes, Deletions Or Additions To The
Chromosome, Or Even Complete Rearrangement Of Chromosomal Segments.
Choices:
True
False
ANS. False
Explanation: Chromosomal Ablation Is Not A Commonly Used Term For Total Changes
In Chromosomes; This Statement Is Overly Broad And Inaccurate.
2. True/False
Question: Sex Chromosomes Can Occur In Pairs But Also Exist Alone With No
Phenotypic Consequence.
Choices:
True
False
ANS. False
Explanation: Presence Or Absence Of Sex Chromosomes Typically Has Phenotypic
Consequences, E.G., Turner Syndrome (XO).
3. True/False
,Question: Trisomy And Monosomy In Autosomal Chromosomes Are Generally Not
Tolerated In Animals Or Plants.
Choices:
True
False
ANS. True
Explanation: Most Autosomal Trisomies Or Monosomies Are Lethal; Few Exceptions
Exist.
4. Short Answer
Question: What Is The Only Trisomy Disorder In Which Individuals Routinely Live
Longer Than One Year? The Incidence Of The Disorder Seems To Increase With An
Increased Age In Which Parent.
ANS.
Disorder: Down Syndrome
Parent: The Mother
5. True/False
Question: Individuals That Are Afflicted With Down Syndrome Typically Exhibit Only
A Subset Of The Stereotypical Characteristics Of The Disorder.
Choices:
True
False
, ANS. True
Explanation: Not All Individuals With Down Syndrome Show All Classical Features.
6. Short Answer
Question: The DSCR Region Thought To Be Typically Responsible For The Down
Syndrome Phenotype Is Located On Chromosome:
ANS. 21
7. Short Answer
Question: Why Do Researchers Think That Individuals With Down Syndrome Are
Protected From Cancers That Cause Solid Tumors?
ANS. Because Of The Gene DSCR1 That Encodes For A Protein That Blocks The
Vascular Endothelial Growth Factors. The Tumors Can't Grow When This Function Is
Blocked.
8. Short Answer
Question: Noninvasive Prenatal Genetic Screening Allows A Mother To Donate A
Sample Of ____. This Blood Is Used To Establish A _____ To Determine The Risks Of
Genetic Disorders.
ANS. Blood; Karyotype
9. Short Answer
Question: What Are The Current Thoughts On Why The Incidence Of Down Syndrome
Increases Drastically After Age 40 In The Mother?
ANS. The Eggs Undergo Meiosis I In A Female Fetus, And Then Are Arrested Until The
Female Goes Through Puberty. A Female That Is 40 Years Old Has Eggs That Are 25
