Sex Chromosome Abnormalities

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18 Questions

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

Deletion

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

Older age in the mother

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

Puberty

What is associated with sex chromosome abnormalities?

A range of physical and developmental problems

What type of syndromes are associated with sex chromosome abnormalities?

Chromosomal syndromes

What is the result of sex chromosome abnormalities?

A range of physical and developmental problems

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

It is inactive and remains condensed

What is the purpose of X inactivation in females?

To reduce the gene dosage of X-linked genes

What is the characteristic of the Barr body?

It is an inactive X chromosome

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

Females: XY, Males: XX

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

X inactivation

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

Murray Barr

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

44-XO

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

Eggs with two X chromosomes or none

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

Klinefelter syndrome

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

It determines the development of testes

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

Feminine

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

Short and stocky

This quiz covers sex chromosome abnormalities, including deletions, and their effects on physical and developmental health. Learn about the symptoms and diagnosis of these syndromes.

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