MCQs of Biology – Chromosome disorders

Trisomy of chromosome number 21 in man causes:

Monoglism is also known as:

Which kind of disease is down syndrome?

Down syndrome is due to:

Down syndrome is due to chromosome number:

Which of the following is a correct match?

Chromosome number of Down syndrome is:

A woman with 47 chromosomes due to three copies of chromosome 21 is characterized by:

Which of the following is related to the high frequency of Down syndrome?

Frequency of Down syndrome increases when the maternal age is:

Down syndrome is due to:

In Down syndrome, Karyotyping has shown that the disorder is associated with trisomy of chromosome number 21 usually due to:

Whose number of sex chromosome is normal?

The condition of sex chromosomes in a male child of Down syndrome will be:

‘Epicanthus’ is the symptom of:

Any change in sex chromosome constitution is not involved in:

Down syndrome is caused by an extra copy of chromosome number 21.What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?

A person who is trisomic for chromosome 18th pair is:

Down , Edward and Patau syndromes are:

Cri- du- chat syndrome is caused by:

Cri- du- chat syndrome in humans is caused by the:

Deletion of short arm of chromosome 4 (4p) results in:

The’ Philadelphia chrmosome’ is found in the patients of:

Which autosome in human beings gives rise ‘Philadelphia chromosme’?

In humans. ‘Philadelphia chrmosome’ results from the reciprocal trans location between chromosome numbers:

Burkitt’s lymphoma, a white blood cell cancer, is associated with reciprocal translocations between chromosomes: