Question 1

Most individuals who have X-linked diseases are _____.

Accepted Answer

A)   males
B)   females
C)   intersex
D)   hemophiliacsE) All of the above
F) C) and D)

Question 2

Which of the following is the vascular organ that links the fetus to the mother's uterus?

Accepted Answer

A)   Fallopian tube
B)   Ovary
C)   Placenta
D)   CervixE) All of the above
F) B) and D)

Question 3

Which of the following statements is true regarding the differences between outcomes for adopted and nonadopted children?

Accepted Answer

A)   Nonadopted children are likely to experience more school-related problems than adopted children.
B)   Children who are adopted very early in their lives are more likely to have positive outcomes than children adopted later in life.
C)   Adoptees were no more likely to be using mental health services than their nonadopted counterparts.
D)   Adopted adolescents were more likely to be withdrawn.E) All of the above
F) A) and C)

Question 4

Summer and Clark are considering undergoing fertility treatments.What is one of the main risk factors that the couple must be aware of while weighing their options?

Accepted Answer

A)   High birth weight in babies conceived through such treatments.
B)   An increase in the possibility of multiple births when such treatments are used.
C)   Negative psychological impact on children conceived through such treatments.
D)   Significant differences in developmental outcomes for children conceived through such treatments.E) B) and C)
F) None of the above

Question 5

Patrick suffers from _____,a genetic abnormality in which delayed blood clotting causes internal and external bleeding.

Accepted Answer

A)   hemophilia
B)   phenylketonuria
C)   sickle-cell anemia
D)   Tay-Sachs diseaseE) A) and B)
F) B) and C)

Question 6

During fertilization,an egg and a sperm fuse to create a single cell called a _____.

Accepted Answer

A)   blastocyst
B)   fetus
C)   gamete
D)   zygoteE) C) and D)
F) B) and D)

Question 7

Scientists had thought that humans had as many as 100,000 or more genes,but recent research indicates a figure of approximately:

Accepted Answer

A)   250.
B)   1,500.
C)   20,500.
D)   1,000,000.E) A) and B)
F) A) and C)

Question 8

Which of the following is NOT a possible explanation for infertility in a woman?

Accepted Answer

A)   Abnormal ova
B)   Blocked fallopian tubes
C)   Eggs lack motility
D)   Disease of the uterusE) C) and D)
F) A) and D)

Question 9

David and Kelly are seeking help for infertility.Under their physician's guidance,they decide to undergo a procedure in which Kelly's eggs are combined in a laboratory dish with her husband's sperms.What is this procedure called?

Accepted Answer

A)   Gamete transfer
B)   Intracytoplasmic sperm injection
C)   Zygote intrafallopian transfer
D)   In vitro fertilizationE) A) and B)
F) B) and C)

Question 10

Brad is an athletic boy who is on every sport team in school.Stephen loves math and is part of his school's math club.These instances reflect _____ correlations that occur when children seek out environments that they find compatible and stimulating.

Accepted Answer

A)   passive genotype-environment
B)   evocative genotype-environment
C)   active (niche-picking) genotype-environment
D)   influential genotype-environmentE) B) and D)
F) All of the above

Question 11

A phenotype can consist of _____ as well as _____ characteristics.

Accepted Answer

A)   physical; environmental
B)   conscious; subconscious
C)   biological; ecological
D)   physical; psychologicalE) None of the above
F) A) and B)

Question 12

Esperanza is having a prenatal test to remove a small sample of the placenta for genetic testing.Identify the test that her doctor is performing.

Accepted Answer

A)   Chorionic villus sampling (CVS) 
B)   Amniocentesis
C)   Noninvasive prenatal diagnosis (NIP
D)  
D)   Triple screenE) A) and C)
F) A) and B)

Question 13

Which of the following is true of Down syndrome?

Accepted Answer

A)   It primarily occurs in African American children.
B)   It occurs when genetic imprinting goes awry.
C)   Its symptoms include retardation of motor and mental abilities.
D)   It is caused by the presence of an extra copy of chromosome Y.E) A) and D)
F) B) and C)

Question 14

_____ genes are those that make an individual less vulnerable to certain diseases and make it more likely for him/her to live till an older age.

Accepted Answer

A)   Susceptibility
B)   Longevity
C)   Vulnerability
D)   MutatedE) A) and B)
F) B) and C)

Question 15

Human embryos must possess _____ to be viable.

Accepted Answer

A)   at least one X chromosome
B)   two Y chromosomes
C)   at least one Y chromosome
D)   three Y chromosomesE) None of the above
F) B) and D)

Question 16

Fragile X syndrome occurs:

Accepted Answer

A)   more often in males than in females.
B)   only in females.
C)   in both sexes equally.
D)   only in males.E) None of the above
F) A) and B)

Question 17

What are the short segments of DNA that are located on the chromosomes,and which are considered to be the basic units of hereditary information?

Accepted Answer

The answer of What are the short segments of DNA...

Question 18

A mistake by the cellular machinery,or damage from an environmental agent such as radiation,may produce a _____,which is a permanently altered segment of DNA.

Accepted Answer

A)   susceptibility gene
B)   vulnerability gene
C)   longevity gene
D)   mutated geneE) None of the above
F) B) and D)

Question 19

Which of the following is an example of chromosomal abnormality that occurs when whole chromosomes do not separate properly during meiosis?

Accepted Answer

A)   Down syndrome
B)   Hemophilia
C)   Huntington's disease
D)   Sickle-cell anemiaE) A) and B)
F) A) and C)

Question 20

_____ occurs when the expression of a gene has different effects depending on whether the mother or the father passed on the gene.

Accepted Answer

A)   Polygenic inheritance
B)   X-linked inheritance
C)   Genetic imprinting
D)   Y-linked inheritanceE) C) and D)
F) None of the above

Exam 2: Biological Beginnings

Summer and Clark are considering undergoing fertility treatments.What is one of the main risk factors that the couple must be aware of while weighing their options?

Correct AnswerverifiedShow Answer

Patrick suffers from _____,a genetic abnormality in which delayed blood clotting causes internal and external bleeding.

Correct AnswerverifiedShow Answer

_____ genes are those that make an individual less vulnerable to certain diseases and make it more likely for him/her to live till an older age.

Correct AnswerverifiedShow Answer

What are the short segments of DNA that are located on the chromosomes,and which are considered to be the basic units of hereditary information?

Correct AnswerverifiedShow Answer

Which of the following is true of Down syndrome?

Correct AnswerverifiedShow Answer

During fertilization,an egg and a sperm fuse to create a single cell called a _____.

Correct AnswerverifiedShow Answer

Fragile X syndrome occurs:

Correct AnswerverifiedShow Answer

_____ occurs when the expression of a gene has different effects depending on whether the mother or the father passed on the gene.

Correct AnswerverifiedShow Answer

Brad is an athletic boy who is on every sport team in school.Stephen loves math and is part of his school's math club.These instances reflect _____ correlations that occur when children seek out environments that they find compatible and stimulating.

Correct AnswerverifiedShow Answer

Which of the following is NOT a possible explanation for infertility in a woman?

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding the differences between outcomes for adopted and nonadopted children?

Correct AnswerverifiedShow Answer

Which of the following is the vascular organ that links the fetus to the mother's uterus?

Correct AnswerverifiedShow Answer

David and Kelly are seeking help for infertility.Under their physician's guidance,they decide to undergo a procedure in which Kelly's eggs are combined in a laboratory dish with her husband's sperms.What is this procedure called?

Correct AnswerverifiedShow Answer

Which of the following is an example of chromosomal abnormality that occurs when whole chromosomes do not separate properly during meiosis?

Correct AnswerverifiedShow Answer

Human embryos must possess _____ to be viable.

Correct AnswerverifiedShow Answer

A phenotype can consist of _____ as well as _____ characteristics.

Correct AnswerverifiedShow Answer

Scientists had thought that humans had as many as 100,000 or more genes,but recent research indicates a figure of approximately:

Correct AnswerverifiedShow Answer

A mistake by the cellular machinery,or damage from an environmental agent such as radiation,may produce a _____,which is a permanently altered segment of DNA.

Correct AnswerverifiedShow Answer

Most individuals who have X-linked diseases are _____.

Correct AnswerverifiedShow Answer

Esperanza is having a prenatal test to remove a small sample of the placenta for genetic testing.Identify the test that her doctor is performing.

Correct AnswerverifiedShow Answer

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A phenotype can consist of _ as well as _ characteristics.

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