A neutron is composed of 1 up quark and 2 down quarks right?

Question

But during beta decay, a neutron decays into a proton, electron and antineutrino.
So this cluster of quarks is transformed into these new particles? A proton itself is made up of 2 up quarks and 1 down quark I thought, so how this decay phenomena is possible is not clear to me.
What is going on here?

maussy..not good enough. I already know the first sentence is true. I'm looking at explaining the decay.

joyettan..can you please read questions before you answer them??

Answer 1

Yes, look at my link

Answer 2

Quark is one of the two basic constituents of matter (the other is the lepton). Quarks are the only fundamental particles that interact through all four of the fundamental forces. In every proton or neutron, there are exactly 3 quarks. In a proton, there are two up quarks and one down quark, yielding a net charge of +1. In a neutron, there are one up quarks and two down quarks, yielding a neutral net charge