In some instances meiosis of a primary spermatoctye with six chromosomes results in two spermatozoa that contain four chromosomes and two spermatozoa that contain two chromosomes. predict the most likely cause

Explanation:

The 3 pairs of homologous chromosomes failed to separate properly during anaphase I. As a result, after anaphase I, one cell contained 4 chromosomes and the other contained two chromosomes.

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.