MCQs of Biology – Human Sex Anomalies

In human beings 45 chromosomes (44xXO) causes:

Down syndrome and Turner syndrome occur in human beings due to:

Turner syndrome is an example of:

Turner syndrome in human is caused by:

Turner syndrome has _______ chromosome complement :

Turner syndrome is:

The chromosomal pattern of Turner syndrome usually has:

Syndrome in human in which an individual somatic cell contain only one sex chromosome XO is called:

The person with Turner syndrome has:

‘Webbed neck’ is a characteristic of:

In man which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes:

Gynaecomastia is a condition seen in:

The syndrome in which individual somatic cell contains there sex chromosomes, XXX is called:

The sex chromosome constitutionin a Klinefelter male is:

The number of chromosomes in Klinefelter syndrome is:

In which disease , man has an extra X-chromosome?

Chromosomal analysis reveals a 47, XXY karyotype . Which of the following descriptions best fits this abnormality?

IN 1956, an XXXY type of abnormality was seen in three patients which is:

Chromosomal analysis reveals a 47, XXY karyotype. Which of the following descriptions best fits this abnormality?

In Drosophila XXY represents a female but in human it is an abnormal male. It shows that:

In humans , male XXY and female XXXX occur due to:

In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes?

Who has first described XYY syndrome?

Jacobs syndrome has:

The error in meisosis that produces a 47, XYY karyotype is best described by:

Mental retardation in man associated with sex chromosomal abnormality is usually due to increase in: