Why are grasshopper and Drospphila said to show male heterogamity? Explain

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principleinheritance

#1

1.Why are grasshopper and Drospphila said to show male heterogamity? Explain.
2. Explain female heterogamity with the help of an example.
or
Write the types of sex-determinations mechanisms the following crosses show.Give an example of each type.

  1. Female XX with Male XO
  2. Female ZW with Male ZZ

#2
  1. In grasshopper males have one X only in Drosophila males have one X and one Y.Males in both produce 2 different kinds of gametes so heterogametic.
  2. In birds female has ZW, produce two kinds of gametes and so heterogametic.
    OR
  3. Male heterogamity, Grasshopper.
  4. Female heterogamity, Birds.