alleryStart learning →How many chromatids make up a tetrad?
ATwo chromatids
BFour chromatids
CSix chromatids
DEight chromatids
Answer & Solution
Correct answer: B. Four chromatids
1. A tetrad is a pair of homologous chromosomes held together during prophase I.
2. Each of those two chromosomes has already been duplicated.
3. So each contributes two sister chromatids.
4. Two chromosomes times two chromatids gives four chromatids in total, which is where the name comes from.
_Source: OpenStax Biology 1e (CC BY 4.0), Chs 10 and 11, section 11.1 The Process of Meiosis_
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