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. Dyad is
  2. Base substitutions from base analogues I are called
  3. The term 'meiosis' was coined bv
  4. The first person to induce mutations was
  5. The scientists who rediscovered the Mendel's laws are
  6. In a monohybrid cross the Fi ratio of a backcross is
  7. When two genes are situated very close to each other in a chromosome
  8. Among the following which is a test cross?
  9. Klinefelter's syndrome is developed when the chromosome in male is
  10.  A chemical mutagen is
  11. The best method to determine whether an individual is homozygous or heterozygous is
  12. Crossing over in meiosis occurs in
  13. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  14. A child is bom with an extra chromosome in each of its cells. This is usually the result of
  15. Chromosomes exhibit minimum coiling during
  16. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  17. If an individual does not breed true for its characters, it is called
  18. Transfer of a gene or genes through a virus is called
  19. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  20. The condition in which only one allele of a pair is present is known as
  21. Lethal genes are those which
  22. The segment of DNA which participates in crossing over is known as
  23. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  24. Which one of the following chemical characteristics is not common to all living beings ?
  25. Colour blindness is caused due to
  26. Exhibition of superiority by a hybrid over both of its parents is called
  27. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  28. Linkage is
  29. Reverse transcription was discovered by
  30. DNA duplication occurs in