Question Detail
Question
The paired up chromosomes at prophase I are often described as ____
Correct Answer
Option A is the correct answer.
Detailed Explanation
During prophase I of meiosis, homologous chromosomes pair up to form structures called bivalents (or tetrads). Each bivalent consists of two homologous chromosomes, each made up of two sister chromatids, hence four chromatids total.
Hint
What is a pair of homologous chromosomes called during meiosis I?