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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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