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Read the following text and answer the f...

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded.
Down Syndrome is an extra copy which chromosome

A

`22^(nd)` chromosome

B

`21^(st)` chromosome

C

`45^(th)` chromosome

D

`47^(th)` chromosome

Text Solution

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The correct Answer is:
**Step-by-Step Text Solution:** 1. **Understanding Down Syndrome**: Down syndrome is a genetic condition that occurs when an individual has an extra copy of the 21st chromosome. This condition is also referred to as trisomy 21. 2. **Identifying the Chromosome**: The question specifically asks which chromosome has an extra copy in Down syndrome. According to the provided text, it is the 21st chromosome that is duplicated. 3. **Conclusion**: Therefore, the answer to the question is that Down syndrome is caused by an extra copy of the 21st chromosome. **Final Answer**: Down syndrome is an extra copy of the 21st chromosome. ---
**Step-by-Step Text Solution:** 1. **Understanding Down Syndrome**: Down syndrome is a genetic condition that occurs when an individual has an extra copy of the 21st chromosome. This condition is also referred to as trisomy 21. 2. **Identifying the Chromosome**: The question specifically asks which chromosome has an extra copy in Down syndrome. According to the provided text, it is the 21st chromosome that is duplicated. 3. **Conclusion**: Therefore, the answer to the question is that Down syndrome is caused by an extra copy of the 21st chromosome. ...
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Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. Down syndrome is caused due to

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. The number of chromosomes a child with Down syndrome has is

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