What is law of conservation of matter is?

the mass of the system must remain constant over time

Explanation:

In other words matters cannot be created or destroyed, the overall amount will remain the same

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides