#34-Non-disjunction-Aneuploidy
(Botany) > Principles of Inheritance & Variation

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Failure of cytokinesis after telophase stage of cell divislon results in an increase in a whole set of chromosomes in an organism and, this phenomenon is known as:

1. Aneuploidy

2. Translocation

3. Polyploidy.

4. Inversion

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Which of the following is not a feature of Down's Syndrome?

1. It is caused by a non-disjunction in an autosome

2. The affected individual has trisomy of chromosome 21

3. The aflected individual has a characteristic simian palmar crease

4. The mental development of affected individual is normal

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Aneuploidy results from :

1. Point mutations

2. Gross structural changes in chromosomes

3. Failure of cytokinesis after telophase stage of cell division

4. Failure of segregation of chromatids during cell division 

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Which of the following would not be a feature seen in a patient with the following karyotype ?

1. Many loops on finger tips

2. Congenital heart disease

3. Big and wrinkled tongue

4. Mucus clogging of airways

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A disease caused by an autosomal primary non-disjunction is 

(1) Down's syndrone

(2) Kilnerfelter's syndrome

(3) Turner's syndrome

(4) Sickle-cell anemia

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