Which one of the following conditions correctly describes the manner of determining the sex in the given example?

  • Option 1)

    Homozygous sex chromosomes (ZZ) determine female sex in birds.

  • Option 2)

    XO type of sex chromosomes determine male sex in grasshopper

  • Option 3)

    XO condition in human as found in Turner syndrome, determines female sex.

  • Option 4)

    Homozygous sez chromosomes (XX) produce male in Drosophila.

 

Answers (1)

As learnt in

XO-type sex determination mechanism -

Sex determination mechanism where males have only one X-chromosome besides the autosomes, whereas females have a pair of X-chromosome.

- wherein

E.g. in a grasshoper

 

 


Option 1)

Homozygous sex chromosomes (ZZ) determine female sex in birds.

This option is incorrect

Option 2)

XO type of sex chromosomes determine male sex in grasshopper

This option is correct

Option 3)

XO condition in human as found in Turner syndrome, determines female sex.

This option is incorrect

Option 4)

Homozygous sez chromosomes (XX) produce male in Drosophila.

This option is incorrect

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