How many electrons does potassium need to lose to become an ion? Will it become a positively charged cation or a negatively charged anion?

Group 1A elements loses only one electron to form positively charged ions(cation).

Explanation:

Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous