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A colour-blind man marries the daughter of a colour-blind person. In their progeny

A. none of her daughters are colour-blind

B. all her sons are colour-blind

C. all her daughters are colour-blind

D. half of her sons are colour-blind

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  1. The term 'meiosis' was coined bv
  2. If an individual does not breed true for its characters, it is called
  3. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  4. Dyad is
  5. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  6. Exhibition of superiority by a hybrid over both of its parents is called
  7. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  8. Base substitutions from base analogues I are called
  9. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  10.  A chemical mutagen is
  11. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  12. Linkage is
  13. When two genes are situated very close to each other in a chromosome
  14. Lethal genes are those which
  15. Crossing over in meiosis occurs in
  16. Mutations which are not dominant are not lost by a gene pooL This is known as
  17. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  18. The science dealing with study of inheritance and variation is
  19. Transfer of a gene or genes through a virus is called
  20.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  21. The first person to induce mutations was
  22. Diakinesis is characterised by
  23. Reverse transcription was discovered by
  24. The segment of DNA which participates in crossing over is known as
  25. When is the sex of an offspring decided
  26. Which one of the following chemical characteristics is not common to all living beings ?
  27. The number of characters investigated by Mendel was
  28. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  29. In humans, an example of sex-linked trait is
  30. Klinefelter's syndrome is developed when the chromosome in male is