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In humans, an example of sex-linked trait is

A. Curly hair

B. Sickle-cell anaemia

C. Colour-blindness

D. Down's syndrome

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  1. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  2. Mutations which are not dominant are not lost by a gene pooL This is known as
  3. Linkage is
  4. Exhibition of superiority by a hybrid over both of its parents is called
  5. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  6.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  7. When is the sex of an offspring decided
  8. In a monohybrid cross the Fi ratio of a backcross is
  9. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  10. The condition in which only one allele of a pair is present is known as
  11. Base substitutions from base analogues I are called
  12. Klinefelter's syndrome is developed when the chromosome in male is
  13. Transfer of a gene or genes through a virus is called
  14. DNA duplication occurs in
  15. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  16. The first person to induce mutations was
  17. Linked genes may be separated by the process of
  18. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  19. Colour blindness is caused due to
  20. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  21. Diakinesis is characterised by
  22. The genetic constitution of an organism is known as
  23. The scientists who rediscovered the Mendel's laws are
  24. Chromosomes exhibit minimum coiling during
  25. Dyad is
  26. The number of characters investigated by Mendel was
  27. The chromosomal theroy of heredity implies that
  28. The science dealing with study of inheritance and variation is
  29. Which one of the following chemical characteristics is not common to all living beings ?
  30.  A chemical mutagen is