Multiple choice

Which of the following symbols are used for representing chromosome of birds?

  1. ZZ-ZW

  2. XX-XY

  3. XO-XX

  4. ZZ-WW

  5. -

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A Correct answer
Explanation

These symbols are used for chromosomes in birds. Males are the homogametic sex (ZZ), while females are the heterogametic sex (ZW). The Z chromosome is larger and has more genes.