They're said to be Sex-Linked. Hope this helps!
Frontal Wedging...
Cold and Warm fronts
Dew Point...
The % of water vapor in the air
Answer;
C. it is the part f the atom with the greatest mass
Explanation;
The nucleus of an atom is a small dense region at the center of an atom that contains protons and neutrons.
Almost all the mass of an atom is located in the nucleus, with a very small contribution from the electron shells.
The protons are positively charged which gives the nucleus a positive charge while the neutrons have no charge.
The progeny has one set of genes from its mother and another set from its father.
The answer is to your question my friend is D.