Home

When is the sex of an offspring decided

A. At ovulation

B. During meiosis

C. During cleavage

D. At fertilization

You can do it
  1. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
  2. In a monohybrid cross the Fi ratio of a backcross is
  3. Linkage is
  4. Chromosomes exhibit minimum coiling during
  5. The first person to induce mutations was
  6. When is the sex of an offspring decided
  7. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  8. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  9. Which disease results from the genetic inability to synthesize a single enzyme ?
  10. Lethal genes are those which
  11. How many meiosis will be required to produce 102 pollen-grains ?
  12. Exhibition of superiority by a hybrid over both of its parents is called
  13. The science dealing with study of inheritance and variation is
  14. The scientists who rediscovered the Mendel's laws are
  15. If an individual does not breed true for its characters, it is called
  16. Among the following which is a test cross?
  17. Linked genes may be separated by the process of
  18. The segment of DNA which participates in crossing over is known as
  19. A functional unit of a gene which specifies synthesis of one poly-peptide is known as
  20.  A chemical mutagen is
  21. The condition in which only one allele of a pair is present is known as
  22. Crossing over in meiosis occurs in
  23. The nuclear membrane completely disappears during
  24. The number of characters investigated by Mendel was
  25. Albinism in com plants is best described as
  26. Reverse transcription was discovered by
  27. In the Operon concept, the regulator gene regulates chemical reactions in the cell by
  28. A codon is a sequence of 3 nucleolides on
  29. Base substitutions from base analogues I are called
  30. Diakinesis is characterised by