Question 1

Many individuals with Klinefelter syndrome experience
A) unusually good verbal abilities.
B) deficits in verbal abilities.
C) unusually good spatial relations.
D) deficits in the processing of spatial relations.

Accepted Answer

Studies have shown that individuals with Klinefelter syndrome often have deficits in verbal abilities, such as language development, reading, and writing. This may be due to differences in brain structure and hormone levels.

Question 2

Klinefelter syndrome results from which of the following genotypes?
A) XO
B) XYY
C) XXY
D) YO

Accepted Answer

Klinefelter syndrome results from having an extra X chromosome, resulting in the genotype XXY.

Question 3

Which of the following genetic conditions is the most common?
A) 5-alpha-reductase deficiency
B) XYY
C) Turner syndrome
D) Kleinfelter syndrome

Accepted Answer

Klinefelter syndrome is the most common of the listed genetic conditions, affecting approximately 1 in 500 to 1,000 male births.

Question 4

Compared with the population with typical sex chromosomes,Nielsen and Wohlert (1991)found that populations with sex chromosome abnormalities were associated with
A) no increases in criminal activity,mental retardation,or physical disorders.
B) significant increases in mental retardation.
C) significant increases in physical abnormalities.
D) significant increases in mental disorders.

Accepted Answer

The answer of Compared with the population with typical sex...

Question 5

Whether a typical infant has male or female genetic sex is determined by the contribution of
A) an X or Y chromosome by the mother.
B) an X or Y chromosome by the father.
C) X or Y chromosomes by the mother and by the father.
D) all 46 chromosomes received from both parents.

Accepted Answer

The genetic sex of an infant is determined by the contribution of an X or Y chromosome by the father. The mother always contributes an X chromosome, so the father's contribution determines whether the infant will be male (XY) or female (XX).

Question 6

Many women with Turner syndrome experience
A) unusually good verbal abilities.
B) deficits in verbal abilities.
C) unusually good spatial relations.
D) deficits in the processing of spatial relations.

Accepted Answer

Turner syndrome is a condition that affects females, where one of the X chromosomes is missing or partially missing. This can lead to various developmental issues. Among these, women with Turner syndrome often experience deficits in the processing of spatial relations, which can affect tasks such as navigating spaces or understanding maps. Spatial relations involve understanding how objects relate to each other in space, and difficulties in this area are a common characteristic of Turner syndrome.

Question 7

How many pairs of chromosomes do human males and females have in common?
A) 20
B) 22
C) 25
D) 27

Accepted Answer

Human males and females have 22 pairs of chromosomes in common, known as autosomes. However, they differ in their sex chromosomes, with males having one X and one Y chromosome and females having two X chromosomes.

Question 8

Physically,most men with an XYY genotype are
A) unusually muscular.
B) lacking in male secondary sex characteristics.
C) shorter than normal.
D) unusually tall and typically have severe acne.

Accepted Answer

Men with an XYY genotype tend to be taller than average, with heights ranging from 6'0" to 6'6". They do not typically lack male secondary sex characteristics, and there is no evidence to suggest they have more severe acne or are unusually muscular.

Question 9

Most men with an XYY genotype are
A) infertile.
B) unusually fertile.
C) normally fertile,but with a high probability of producing abnormal sperm.
D) normally fertile,with a high probability of producing normal sperm.

Accepted Answer

The answer of Most men with an XYY genotype are
A)...

Question 10

The toy preferences observed in male and female children support the idea that
A) gender differences in toy selection are primarily the result of socialization,not biology.
B) gender differences in toy selection are at least partly determined by biology.
C) there are no gender differences in toy selection until children are the age of 18-24 months.
D) gender differences in toy selection appear early in development,but then decrease as children enter elementary school.

Accepted Answer

Studies have shown that even when given the option to play with a variety of toys, male and female children tend to gravitate towards toys that are traditionally associated with their gender. This pattern is observed across different cultures and is thought to be at least partly determined by biological factors such as hormonal influences on the brain. However, socialization also plays a role in shaping children's toy preferences.

Question 11

Individuals with Klinefelter syndrome are
A) male.
B) female.
C) raised as females,but may switch to male identity at puberty.
D) raised as males,but may switch to female identity at puberty.

Accepted Answer

Individuals with Klinefelter syndrome are male, with an extra X chromosome. They may have physical traits such as taller height and delayed puberty, but they still have male reproductive organs and develop masculine features. There is no evidence to suggest that individuals with Klinefelter syndrome are raised as or switch to female identity at puberty.

Question 12

The case of David Reimer,who was raised as a girl but later took on a male identity,reminded researchers that
A) biology plays a significant role in gender identity.
B) biology appears to play little if any role in gender identity.
C) biology plays a significant role in the gender identity of males,but not females.
D) socialization does not have any effects on gender identity.

Accepted Answer

The case of David Reimer demonstrated the significant role that biology plays in gender identity, as despite being raised as a girl, he still identified and ultimately transitioned to a male identity. The case challenged the notion that gender identity could solely be attributed to socialization and highlighted the importance of biological factors.

Question 13

Jennifer has a genetic condition that resulted in her being shorter than her parents and siblings,and has necessitated that she take precautions to prevent diabetes and osteoporosis.She performs well in school,but has some difficulty with figure rotation tasks.Which of the following is likely to be Jennifer's diagnosis?
A) Kleinfelter syndrome
B) Androgen insensitivity syndrome
C) 5-alpha-reductase deficiency
D) Turner syndrome

Accepted Answer

Turner syndrome is a genetic disorder that occurs in females when one of the X chromosomes is missing or partially missing. This results in short stature, as well as an increased risk of osteoporosis and diabetes. Individuals with Turner syndrome may also struggle with spatial reasoning tasks, such as figure rotation. Kleinfelter syndrome and Androgen insensitivity syndrome typically present with physical differences not mentioned in the scenario, and 5-alpha-reductase deficiency affects male development.

Question 14

Men with Kleinfelter syndrome are more likely to be
A) physically aggressive.
B) shorter than their parents and siblings.
C) left-handed.
D) colorblind.

Accepted Answer

Kleinfelter syndrome is associated with a higher incidence of left-handedness compared to the general population.

Question 15

Most cases of Turner syndrome result in
A) normal fertility.
B) a high likelihood that the condition will be passed on to offspring.
C) infertility.
D) increased fertility.

Accepted Answer

Turner syndrome typically results in infertility due to ovarian insufficiency or premature ovarian failure, meaning that the ovaries don't function properly and don't produce enough hormones to support normal ovulation and menstruation. This means it is unlikely that a woman with Turner syndrome will be able to conceive naturally. While some women with Turner syndrome may be able to conceive with fertility treatments or assisted reproductive technologies, the chances of this occurring are much lower than in women without the condition. Therefore, option C is the best choice for this question.

Question 16

Compared with the general male population,the population of men with the XYY genotype are more likely to show
A) higher rates of violent crime.
B) lower rates of violent crime.
C) higher rates of property crime.
D) lower rates of property crime.

Accepted Answer

The answer of Compared with the general male population,the population...

Question 17

Ryan is unusually tall for his age,has a lot of trouble with acne,and finds school a lot more difficult than his older siblings.Through thorough testing,his physicians have discovered that Ryan has which of the following conditions?
A) an XYY genotype
B) 5-alpha-reductase deficiency
C) androgen insensitivity syndrome
D) congenital adrenal hyperplasia

Accepted Answer

Ryan's symptoms of being unusually tall, having acne, and experiencing learning difficulties are consistent with an XYY genotype, which is associated with these characteristics.

Question 18

Kimberly,a genetics counselor,was working with a young couple whose unborn child has been diagnosed with a sex chromosome abnormality.Kimberly is likely to inform the couple that their child
A) has a significant risk of a mental disorder.
B) will experience severe physical disability.
C) is very likely to be mentally retarded.
D) may have fertility problems,but is unlikely to have other serious mental or physical problems.

Accepted Answer

Sex chromosome abnormalities typically do not result in severe physical or mental disabilities. However, they may affect fertility in some cases. Therefore, option D is the most appropriate. Option A and C are incorrect because they imply that the child will definitely have mental disorders or intellectual disability, which is not always the case. Option B is incorrect because it suggests that the child will have severe physical disability, which is unlikely with sex chromosome abnormalities.

Question 19

Andre was found to have an extra Y chromosome.Because of this,you can expect that Andre is likely to be
A) convicted of a violent crime.
B) mentally retarded.
C) indistinguishable from a man with an XY genotype.
D) infertile.

Accepted Answer

Having an extra Y chromosome (XYY genotype) is a rare genetic condition and is not typically associated with any negative or noticeable physical or behavioral traits. Men with XYY genotype are generally indistinguishable from men with XY genotype and can lead normal lives without any significant health problems. There is no evidence to suggest that XYY men are more likely to be violent or mentally challenged. While some studies have suggested a slightly higher risk of fertility problems among XYY men, many XYY men are able to father children normally.

Question 20

An individual with an XO genotype has
A) Turner syndrome.
B) Klinefelter syndrome.
C) a typical female genotype.
D) Down syndrome.

Accepted Answer

An individual with an XO genotype only has one X chromosome, indicating that they have Turner syndrome. People with Turner syndrome typically have short stature, infertility, and other health problems.

Quiz 10: Sexual Behavior

Many individuals with Klinefelter syndrome experience

Klinefelter syndrome results from which of the following genotypes?

Which of the following genetic conditions is the most common?

Compared with the population with typical sex chromosomes,Nielsen and Wohlert (1991) found that populations with sex chromosome abnormalities were associated with

Whether a typical infant has male or female genetic sex is determined by the contribution of

Many women with Turner syndrome experience

How many pairs of chromosomes do human males and females have in common?

Physically,most men with an XYY genotype are

Most men with an XYY genotype are

The toy preferences observed in male and female children support the idea that

Individuals with Klinefelter syndrome are

The case of David Reimer,who was raised as a girl but later took on a male identity,reminded researchers that

Men with Kleinfelter syndrome are more likely to be

Most cases of Turner syndrome result in

Compared with the general male population,the population of men with the XYY genotype are more likely to show

Ryan is unusually tall for his age,has a lot of trouble with acne,and finds school a lot more difficult than his older siblings.Through thorough testing,his physicians have discovered that Ryan has which of the following conditions?

Kimberly,a genetics counselor,was working with a young couple whose unborn child has been diagnosed with a sex chromosome abnormality.Kimberly is likely to inform the couple that their child

Andre was found to have an extra Y chromosome.Because of this,you can expect that Andre is likely to be

An individual with an XO genotype has