4. Describe the differences in the atomic structures of a hydrogen atom and a helium atom

A helium atom consists of a nucleus containing two positively charged protons and two neutrons, encircled by two orbiting electrons which carry a negative charge. A hydrogen atom has just one proton and one electron. The difference is that the nucleus is 4.1 times heavier than normal.

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

the child is heterozygous

a