Question 1

Samson is taller and has a higher IQ than either of his parents. Which of the following terms would be used to explain this?

Accepted Answer

A)   Adoption
B)   Multi-factorial inheritance
C)   Environmentally influenced inheritance
D)   Polygenetic inheritance

Question 2

Blake carries two dominant genes for brown eyes. Blake is therefore ________ in his eye color chromosomes.

Accepted Answer

The answer of Blake carries two dominant genes for brown...

Question 3

Which of the following is a characteristic of a child born with fetal alcohol syndrome?

Accepted Answer

A)   The child may be born larger than other infants of comparable maturity and may continue to be larger than its age peers throughout life.
B)   The child may have a very high physical activity level or may even be hyperactive.
C)   The child may be mentally retarded.
D)   The child may have a large, broad nose.

Question 4

Which of the following is the most common sex-chromosome anomaly?

Accepted Answer

A)   Down syndrome
B)   Klinefelter's syndrome
C)   PKU
D)   Turner's syndrome

Question 5

When does a developing infant begin to respond to sound?

Accepted Answer

A)   6 - 10 weeks
B)   13 - 16 weeks
C)   22-26 weeks
D)   36-40 weeks

Question 6

Phyllip has red hair, which comes from a recessive gene. This must mean that Phyllip received the gene from

Accepted Answer

A)   his mother.
B)   his father.
C)   both parents.
D)   neither parent (environmental causes) .

Question 7

________ cells hold neurons together and give shape to neural structures.

Accepted Answer

Glial

Question 8

Which of the following is true of a trait controlled by a dominant gene?

Accepted Answer

A)   The trait will be expressed even if the instructions of the corresponding gene in the other half of the pair are different.
B)   The trait may or may not be expressed, depending upon whether environmental conditions facilitate or prevent the expression of the trait.
C)   The trait will always be a positive, beneficial trait.
D)   The trait will be expressed only if the instructions of the corresponding gene in the other half of the pair are the same.

Question 9

A newborn infant is exhibiting a weak cry, no response to stimulation of the feet, flaccid muscle tone, has blue extremities, and a heart rate of 60. What is this child's Apgar score?

Accepted Answer

The answer of A newborn infant is exhibiting a weak...

Question 10

Identify three things that a pregnant mother is likely to experience during the second trimester of her pregnancy.

Accepted Answer

The three most common are disa...

Question 11

Which of the following is a correct statement about the events leading up to conception?

Accepted Answer

A)   Ordinarily, a woman produces two ova per month, one from each of her ovaries.
B)   Conception normally takes place in the uterus.
C)   After ejaculation, sperm travel the following path: the woman's vagina, cervix, uterus, and fallopian tube.
D)   After ovulation, the ovum travels down the uterus to the fallopian tube.

Question 12

What is meant by the cephalocaudal pattern of development? Give an example.

Accepted Answer

development proceeds from the head down;...

Question 13

An infant who is born with low birth weight, flattened nose, hearing loss, and heart defects is likely suffering from ________ .

Accepted Answer

fetal alcohol syndrome

Question 14

Define the concept of genomic imprinting.

Accepted Answer

The key points are: presence of a chemical label that identifies each gene as having come from father or mother; possibility of harmfulness of genes depending on which parent they came from; imprints may evoke responses in other genes or tissues.

Question 15

Which of the following best defines genomic imprinting?

Accepted Answer

A)   The idea that we bond with the first moving object that we see
B)   A chemical label that identifies whether a gene came from one's father or mother
C)   A genetic marker that indicates dominance or recession
D)   A disease that is linked to a specific chromosome

Question 16

Which of the following terms explains why the human brain develops before the reproductive system?

Accepted Answer

A)   Spinal cord dysplasia
B)   Prenatal gender differentiation
C)   Cephalocaudal growth pattern
D)   Differentiation of the lobes of the brain

Question 17

What does the most current research say about the exactness of traits in identical twins?

Accepted Answer

Identical twins are ...

Question 18

Which of the following statements is true regarding prenatal sex differentiation?

Accepted Answer

A)   Sex differentiation begins at around 4 - 8 weeks of gestation.
B)   If androgens are present, female genitalia develop regardless of the chromosomal makeup of the fetus.
C)   In the absence of the SRX gene, an XY fetus will develop female genitalia.
D)   The absence of a Y chromosome will ensure the development of male genitalia.

Question 19

Gina appeared to be a healthy pregnant woman but her baby was born with central nervous system damage, and later it was determined that the child was completely deaf and has mental retardation. Which of the following would be the most likely cause?

Accepted Answer

A)   HIV
B)   Cytomegalovirus
C)   Syphilis
D)   Rubella

Question 20

Which of the following is true of a trait that is passed through mitochondrial inheritance?

Accepted Answer

A)   It is inherited as a multi-factorial trait.
B)   It is passed from a mother to her children.
C)   It is found only on the Y chromosome.
D)   It is a co-dominant trait.

Exam 3: Prenatal Development and Birth

Samson is taller and has a higher IQ than either of his parents. Which of the following terms would be used to explain this?

Correct AnswerverifiedShow Answer

Blake carries two dominant genes for brown eyes. Blake is therefore ________ in his eye color chromosomes.

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of a child born with fetal alcohol syndrome?

Correct AnswerverifiedShow Answer

Which of the following is the most common sex-chromosome anomaly?

Correct AnswerverifiedShow Answer

When does a developing infant begin to respond to sound?

Correct AnswerverifiedShow Answer

Phyllip has red hair, which comes from a recessive gene. This must mean that Phyllip received the gene from

Correct AnswerverifiedShow Answer

________ cells hold neurons together and give shape to neural structures.

Correct AnswerverifiedGlial

Which of the following is true of a trait controlled by a dominant gene?

Correct AnswerverifiedShow Answer

A newborn infant is exhibiting a weak cry, no response to stimulation of the feet, flaccid muscle tone, has blue extremities, and a heart rate of 60. What is this child's Apgar score?

Correct AnswerverifiedShow Answer

Identify three things that a pregnant mother is likely to experience during the second trimester of her pregnancy.

Correct AnswerverifiedThe three most common are disa...View AnswerShow Answer

Which of the following is a correct statement about the events leading up to conception?

Correct AnswerverifiedShow Answer

What is meant by the cephalocaudal pattern of development? Give an example.

Correct Answerverifieddevelopment proceeds from the head down;...View AnswerShow Answer

An infant who is born with low birth weight, flattened nose, hearing loss, and heart defects is likely suffering from ________ .

Correct Answerverifiedfetal alcohol syndrome

Define the concept of genomic imprinting.

Correct AnswerverifiedThe key points are: presence of a chemical label that identifies each gene as having come from father or mother; possibility of harmfulness of genes depending on which parent they came from; imprints may evoke responses in other genes or tissues.

Which of the following best defines genomic imprinting?

Correct AnswerverifiedShow Answer

Which of the following terms explains why the human brain develops before the reproductive system?

Correct AnswerverifiedShow Answer

What does the most current research say about the exactness of traits in identical twins?

Correct AnswerverifiedIdentical twins are ...View AnswerShow Answer

Which of the following statements is true regarding prenatal sex differentiation?

Correct AnswerverifiedShow Answer

Gina appeared to be a healthy pregnant woman but her baby was born with central nervous system damage, and later it was determined that the child was completely deaf and has mental retardation. Which of the following would be the most likely cause?

Correct AnswerverifiedShow Answer

Which of the following is true of a trait that is passed through mitochondrial inheritance?

Correct AnswerverifiedShow Answer

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Glial

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The three most common are disa...
View Answer

Correct Answer
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development proceeds from the head down;...
View Answer

Correct Answer
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fetal alcohol syndrome

Correct Answer
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The key points are: presence of a chemical label that identifies each gene as having come from father or mother; possibility of harmfulness of genes depending on which parent they came from; imprints may evoke responses in other genes or tissues.

Correct Answer
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Correct Answer
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Correct Answer
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Identical twins are ...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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