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18 Questions

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Sex Chromosome Abnormalities

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Questions and Answers

What type of abnormality can occur when a person is missing part of a sex chromosome?

Translocation
Duplication
Mutation
Deletion (correct)

What is often the reason for prenatal testing that may discover sex chromosome abnormalities?

Older age in the mother (correct)
Previous miscarriage
Family history of cancer
Family history of genetic disorders

At what stage may sex chromosome abnormalities not be diagnosed until?

Puberty (correct)
Adulthood
Birth
Adolescence

What is associated with sex chromosome abnormalities?

A range of physical and developmental problems (A) Signup and view all the answers

What type of syndromes are associated with sex chromosome abnormalities?

Chromosomal syndromes (A) Signup and view all the answers

What is the result of sex chromosome abnormalities?

A range of physical and developmental problems (D) Signup and view all the answers

What is the characteristic of the X chromosome in females during interphase?

It is inactive and remains condensed (A) Signup and view all the answers

What is the purpose of X inactivation in females?

To reduce the gene dosage of X-linked genes (B) Signup and view all the answers

What is the characteristic of the Barr body?

It is an inactive X chromosome (B) Signup and view all the answers

What is the sex chromosome composition of males and females in birds, moths, and butterflies?

Females: XY, Males: XX (D) Signup and view all the answers

What is the term for the process by which one X chromosome is inactivated in females?

X inactivation (A) Signup and view all the answers

What is the name of the scientist who discovered the Barr body?

Murray Barr (B) Signup and view all the answers

What is the typical chromosomal composition of an individual with Turner syndrome?

44-XO (A) Signup and view all the answers

What is the result of nondisjunction during anaphase in meiosis or mitosis?

Eggs with two X chromosomes or none (B) Signup and view all the answers

What is the characteristic of an individual with 44-XXY chromosomal composition?

Klinefelter syndrome (A) Signup and view all the answers

What is the role of the sex-determining region of the Y chromosome in sex determination?

It determines the development of testes (A) Signup and view all the answers

What is the typical gender role adopted by XX individuals in a particular society?

Feminine (B) Signup and view all the answers

What is the characteristic of an individual with 47 chromosomes, commonly referred to as a superfemale?

Short and stocky (B) Signup and view all the answers