1.

Write the types of sex-determination mechanisms the following crosses show. Give an example of each type. i) Female XY with Male XO ii) Female ZW with male ZZ

Answer» i) The type of sex determination mechanism shown in female XX with male XO is male heterogamety. Example- Human
ii) The type of sex determination mechanism shown in female ZW with male ZZ is female heterogamety. Example- Birds.


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