MCQs of Biology – Sex Chromatin

Sex chromatin was discovered by:

Sex chromatin was discovered in:

Sex chromatin can be observed in interphase nuclei of:

Barr body is found in the nucleus during:

Barr body is found in:

Barr body is associated with:

Barr body is associated with:

Number of Barr bodies present in each somatic cell of a female is:

Based on Lyon’s hypothesis, what will be the number of Barr bodies found in human female suffering from Down syndrome?

Barr body of a mammal represents:

A medical technician while observing microscope notes the presence of a BArr body close to the nuclear membrane in the WBC. This indicates that the person under investigation is:

A pregnant woman who has done amniocentesis test find an extra Barr which is likely to be associated with the embryo is:

According to Lyon’s hypothesis, one of the two X- chromosome in each female somatic cell is known as:

The foetal sex can be determined by examining cells from amniotic fluid looking for:

A woman has a child with Klinefelter syndrome. How many Bar bodies the child possesses?

In each somatic cell of a human male contains a single Barr body in its nucleus. The most likely genetic constitution of the person is:

The number of Barr bodies and Y sport in XXXXXYY koryotype are:

A certain human abnormal individual showing two Barr bodies in the somatic cells would be:

The drumstick ( Barr body ) is observed in:

Which of the following microscope is used to observe Y- chromosome ?

The number of Y – chromatin corresponds to:

Lyon’s hypothesis deals with: