An offspring of two homozygous parents different from one another by alleles at only one gene locus is known as

A. monohybrid

B. dihybrid

C. trihybrid

D. backcross

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  1. Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
  2. The first person to induce mutations was
  3. Among the following which is a test cross?
  4. Lethal genes are those which
  5. Klinefelter's syndrome is developed when the chromosome in male is
  6. In humans, an example of sex-linked trait is
  7. Which one of the following chemical characteristics is not common to all living beings ?
  8. Crossing over in meiosis occurs in
  9. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  10. Linkage is
  11. The chromosomal theroy of heredity implies that
  12. A codon is a sequence of 3 nucleolides on
  13. The number of characters investigated by Mendel was
  14. Reverse transcription was discovered by
  15. If an individual does not breed true for its characters, it is called
  16. Dyad is
  17. Down's syndrome is an example of
  18. The term 'meiosis' was coined bv
  19. Colour blindness is caused due to
  20. In a monohybrid cross the Fi ratio of a backcross is
  21. Albinism in com plants is best described as
  22. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  23. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  24. Which disease results from the genetic inability to synthesize a single enzyme ?
  25. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  26.  A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
  27. The science dealing with study of inheritance and variation is
  28. How many meiosis will be required to produce 102 pollen-grains ?
  29. The nuclear membrane completely disappears during
  30. Mutations which are not dominant are not lost by a gene pooL This is known as