Recombination frequency 
1. Is directly proportional to the distance between the genes
2. Is not useful to prepare the genetic maps
3. Of closely situated genes is very high 
4. Is directly proportional to linkage

Subtopic:  Recombination & Gene Mapping |
 85%
From NCERT
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In the given pedigree, find out the genotype which is not possible for individual 'F'?


1. Aa
2. XcX
3. AA
4. XhX
Subtopic:  Pedigree Analysis: Basics | Pedigree Analysis: Problem Solving |
 54%
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Karyotype of Down syndrome has how many chromosomes?
1. 43
2. 46
3. 47
4. 45
Subtopic:  Non - Disjunction & Aneuploidy |
 79%
From NCERT
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A normal man and a normal woman both have one of their parent albino, if get married then what is the probability of their child  being albino?
1. 20%
2. 25%
3. 75%
4. 80%
Subtopic:  Mendelian Disorders |
 75%
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Gynaecomastia is present in which syndrome?
1. Turner
2. Klinefelter
3. Down
4. None of the above
Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 89%
From NCERT
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Which one of them is odd with respect to human male?
1. Absence of one X-chromosome
2. Addition of one X-chromosome
3. Presence of XY- chromosome
4. Absence of Barr body
Subtopic:  Sex Determination |
From NCERT
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XYY → composition
1. Super female
2. Hermaphrodite
3. Male
4. Supermale
Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 62%
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Non-disjunction in meiosis results in:
1. trisomy
2. normal diploid
3. gene mutation
4. None of these
Subtopic:  Non - Disjunction & Aneuploidy |
 76%
From NCERT
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AB blood group shows:
1. Codominance
2. incomplete dominance
3. polygenic inheritance
4. pleiotropy
Subtopic:  Monohybrid Cross: Further Understanding |
 91%
From NCERT
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Gynaecomastia is present in which syndrome?
1. Turner
2. Klinefelter
3. Down
4. None
Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 88%
From NCERT
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