Question

part a
as mitosis begins, ______ are linked together at the centromere.
sister chromatids
daughter cells
sex chromosomes
homologous chromosomes
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Explanation:

• Sister chromatids are identical copies of a chromosome formed during DNA replication.
• In mitosis, they are linked at the centromere until anaphase when they separate.
• Daughter cells are the result of cell division, not linked at the centromere at mitosis start.
• Sex chromosomes are a type of chromosome (e.g., X and Y in humans), not specifically linked at centromere at mitosis onset in general.
• Homologous chromosomes pair in meiosis (not mitosis) at the synaptonemal complex, not at centromere.

Answer:

sister chromatids