Can anyone solve these balanced chemical equations

I will mark your ansers as brainlist
Plz

How will the emission of an alpha particle affect the atomic number of an atom

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

Iwould appreciate if someone could me.