Fertilization typically occurs while the ovum is passing through

Fallopian tube.

Explanation:

The fallopian tubes are the channels that connect the uterus and ovaries. The fallopian tubes are like a tube, but they also behave like a fishing net, collecting the egg released in ovulation and transporting the sperm to the egg and then carrying the fertilized egg to the uterus. Thus we can state that fertilization usually occurs while the egg is passing through the fallopian tubes.

It is in the fallopian tubes that tubal ligation surgery is performed when a woman no longer wishes to become pregnant, which is a clue to its importance for spontaneous pregnancy.

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