Q21 of 42 Page 1

What is heterogamety? Explain the mechanism of sex determination inDrosophila.

OR


Explain the process of making heterogeneous nuclear RNA (hnRNA) into a fully functional mRNA in eukaryotes. Where does this process occur in the cell?


heterogametic are the sex of a species in which the sex chromosomes are not same

For eg male chromosome of human body


Includes X and Y chromosomes


Sex determination in Drosophila is determined by Genic Balance Mechanism.


X: number of X chromosomes


A: number of sets of autosomes


If X/A is 1 or greater , the sex is female


If X/A is 0.5 or less , the sex is male


If X/A is between 1.0 and 0.5 , the sex is intersex


OR


The process occurs in the nucleus eukaryotes


Process of RNA to mRNA



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