Lethal genes are those which

A. cause the death of the organism in which they are present

B. cause the death of the homozygous infant being formed

C. cause the death of heterozygous infant being formed

D. all of the above

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  1. Linked genes may be separated by the process of
  2. The nuclear membrane completely disappears during
  3. A codon is a sequence of 3 nucleolides on
  4. Diakinesis is characterised by
  5. DNA duplication occurs in
  6. Lethal genes are those which
  7. The science dealing with study of inheritance and variation is
  8. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  9. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  10. The scientists who rediscovered the Mendel's laws are
  11. The chromosomal theroy of heredity implies that
  12. The first person to induce mutations was
  13. If an individual does not breed true for its characters, it is called
  14. Albinism in com plants is best described as
  15. Exhibition of superiority by a hybrid over both of its parents is called
  16. The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
  17. Crossing over in meiosis occurs in
  18. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  19. Which disease results from the genetic inability to synthesize a single enzyme ?
  20. Linkage is
  21. When is the sex of an offspring decided
  22. Base substitutions from base analogues I are called
  23. Klinefelter's syndrome is developed when the chromosome in male is
  24. Among the following which is a test cross?
  25. Reverse transcription was discovered by
  26. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  27. A giant chromosome having many chromo-nemata lying side by side all along their length is called
  28. Chromosomes exhibit minimum coiling during
  29. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  30. In humans, an example of sex-linked trait is