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Klinefelter's syndrome is developed when the chromosome in male is

A. XXY

B. XXXY

C. XXYY

D. All of these

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  1. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  2. In humans, an example of sex-linked trait is
  3. Which disease results from the genetic inability to synthesize a single enzyme ?
  4. Colour blindness is caused due to
  5. The term 'meiosis' was coined bv
  6. Dyad is
  7. The science dealing with study of inheritance and variation is
  8. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  9. In a monohybrid cross the Fi ratio of a backcross is
  10. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  11. Linked genes may be separated by the process of
  12. The condition in which only one allele of a pair is present is known as
  13. If an individual does not breed true for its characters, it is called
  14. Diakinesis is characterised by
  15. When is the sex of an offspring decided
  16. A codon is a sequence of 3 nucleolides on
  17. The chromosomal theroy of heredity implies that
  18. Mutations which are not dominant are not lost by a gene pooL This is known as
  19. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  20. Crossing over in meiosis occurs in
  21. Klinefelter's syndrome is developed when the chromosome in male is
  22. DNA duplication occurs in
  23. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  24. Transfer of a gene or genes through a virus is called
  25. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  26. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  27. The genetic constitution of an organism is known as
  28.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  29. The nuclear membrane completely disappears during
  30. The number of characters investigated by Mendel was