Principles of Inheritance and Variation questions
1199 published questions with worked solutions.
- In β-thalassaemia, the affected chromosome carrying the mutated HBB gene is the
- The possibility of a female becoming a haemophilia is ...A... rare because mother of such a female has to be at least ...B... and...
- ...A... individual show ...B... phenotype but they are the ...C... of the disease as there is 50% probability of transmission of...
- Genetic or chromosomal symbol used for the person who is having sickle-cell anaemia is
- Colour blindness is a failure to discriminate between
- Colour blindness is more observed in ...... humans
- 21 trisomy in humans causes
- Human females have
- BB = for black colour alleles; bb = for brown colour alleles. Offspring of a cross between a black mouse and brown mouse allowed...
- Trisomy stands for
- Match the following columns. | Column I | Column II | |---|---| | (A) Non-parental gene exchange | (1) Crossing over | | (B)...
- Match the following columns. | Column I | Column II | |---|---| | (A) Autosomal linked recessive trait | (1) Down's syndrome | |...
- Female is haemophilic definitely if
- Klinefelter's syndrome results from
- I. Myotonic dystrophy is an autosomal dominant trait; II. Sickle-cell anaemia is an autosomal recessive trait; III. Failure of...
- Genes for colour blindness is carried by I. Abnormal development; II. Father; III. Mother; IV. Autosomes.
- Studies of human sex-linked trait shows that
- Sex-linked allele or disease never passes from
- Genes A, B and C are linked. Genes A and B are more close than A and C. Find out the correct option for the given statements: I....
- Which of the following observation made Mendel in refutation of the blending theory of inheritance?
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