The rapid development of q-calculus has led to the discovery of new generalizations of Bernstein polynomials and Genocchi polynomials involving q-integers. The present paper deals with weighted q-Bernstein polynomials (or called q-Bernstein polynomials with weight α) and weighted q-Genocchi numbers (or called q-Genocchi numbers with weight α and β). We apply the method of generating function and p-adic q-integral representation on Zp\documentclass[12pt]{minimal}
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\begin{document}$\mathbb{Z} _{p}$\end{document}, which are exploited to derive further classes of Bernstein polynomials and q-Genocchi numbers and polynomials. To be more precise, we summarize our results as follows: we obtain some combinatorial relations between q-Genocchi numbers and polynomials with weight α and β. Furthermore, we derive an integral representation of weighted q-Bernstein polynomials of degree n based on Zp\documentclass[12pt]{minimal}
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\begin{document}$\mathbb{Z} _{p}$\end{document}. Also we deduce a fermionic p-adic q-integral representation of products of weighted q-Bernstein polynomials of different degrees n1,n2,…\documentclass[12pt]{minimal}
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\begin{document}$n_{1},n_{2},\ldots $\end{document} on Zp\documentclass[12pt]{minimal}
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\begin{document}$\mathbb{Z} _{p}$\end{document} and show that it can be in terms of q-Genocchi numbers with weight α and β, which yields a deeper insight into the effectiveness of this type of generalizations. We derive a new generating function which possesses a number of interesting properties which we state in this paper.