Rights of a son on ancestral property after his father's death

the total property will have 3 shares: 1 your 1st uncle, 2 your 2nd uncle and 3 you and your mother.
you and your mother will get the share of your father jointly. not the equal shares of your uncles.

Since your father was the owner of the undivided proportionate share of 1 Kattah 1 Chittacks and the 1/3rd of the house, as he died intestate, i.e without making any will, you and your mother jointly become the owners of the undivided proportionate share of 1 Kattah 1 Chittacks and the 1/3rd of the house, accordingly you can mutate the said share in your and your mother's name jointly. All the best. Regards