Which occurred before nucleosynthesis began? check all that apply. universe became transparent quarks started to form inflationary expansion occurred electrons started to form stars were born

Electrons started to form and Stars were born occurred before nucleosynthesis began. Nucleosynthesis is the method that generates new atomic nuclei from pre-existing protons and neutrons.

Therefore, before nucleosynthesis electrons started to form and stars were born for the formation, of new atomic particles for further processes.

Quarks started to form

Inflationary expansion occurred

Electrons started to form

Explanation:

Nucleosynthesis is in the process before a star is born so D is incorrect.  The universe became transparent is just a silly answer so A is incorrect.

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.