Jacob’s syndrome has

1.  XYY

2.  XXX

3.  XXY

4.  YYY

View Answer  
4
Correct Answer :

XYY


Explanation :
No Explanation available for this question

Duchenne muscular dystrophy is caused by the presence of

1.  An extra 21st chromosome

2.  An extra 18th chromosome

3.  A defective gene in X-chromosome

4.  Two X-chromosomes and one Y-chromosome in an individual

View Answer  
4
Correct Answer :

A defective gene in X-chromosome


Explanation :
No Explanation available for this question

A woman with straight hair marries a man with curly hair and,who is known to be heterozygous for the trait.What is the chance that their first child will have curly hair

1.  No chance

2.  One in two

3.  It is certain

4.  One in four

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4
Correct Answer :

One in two


Explanation :
No Explanation available for this question

A man who carries holandric gene in his Y-chromosome,marries a normal woman.The said gene will be transmitted to

1.  All their sons

2.  50% of their sons

3.  All their daughters

4.   50% of their daughters

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4
Correct Answer :

All their sons


Explanation :
No Explanation available for this question

Ram has hairy ears(hypertrichosis),a trait carried by a gene in his Y-chromosome.What is the chance that his grandson will inherit the trait from him

1.  0%

2.  25%

3.  50%

4.  100%

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4
Correct Answer :

100\%


Explanation :
No Explanation available for this question

Phenylketonuria(PKU) is an inherited disease that is characterized by

1.  Elimination of sugar in urine

2.  Elimination of homogentisic acid

3.  Increased occurrence of phenylalanine

4.   Decreased occurrence of phenylalanine in blood and tissues

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4
Correct Answer :

Increased occurrence of phenylalanine


Explanation :
No Explanation available for this question

Gaucher’s disease is associated with abnormal metabolism of

1.  Fat

2.  Nucleic acid

3.  Protein

4.  Carbohydrate

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4
Correct Answer :

Fat


Explanation :
No Explanation available for this question

Who has discovered the taste-blindness of phenylthiocarbamide

1.  Fox

2.  Franklin

3.  Folling

4.  Flemming

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4
Correct Answer :

Fox


Explanation :
No Explanation available for this question

A man is affected with brachydactyly,an autosomal dominant trait that causes shortening of several fingers.What is the risk that the man’s first child will have brachydactyly

1.  25%

2.  50%

3.  75%

4.   100%

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4
Correct Answer :

50\%


Explanation :
No Explanation available for this question

Mental competence in relation to chronological age in man is called

1.  Idiocy

2.  Intelligence

3.  Diligence

4.   Intelligence quotient

View Answer  
4
Correct Answer :

Intelligence quotient


Explanation :
No Explanation available for this question
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