Which correctly describes sister chromatids?(1 point)
Responses
They are the daughter cells that form during cell replication.
They are the daughter cells that form during cell replication.
They form during metaphase when DNA is being replicated.
They form during metaphase when DNA is being replicated.
They make up the mitotic spindle within the cell.
They make up the mitotic spindle within the cell.
They are part of the lined-up chromosomes in mitosis.
Option 3: They form during metaphase when DNA is being replicated.
They are part of the lined-up chromosomes in mitosis.
The correct description of sister chromatids is that they are part of the lined-up chromosomes in mitosis.
To arrive at the correct answer, let's break down the given options and consider the information.
Option 1: "They are the daughter cells that form during cell replication."
This option is incorrect because sister chromatids are not daughter cells but rather identical copies of each other formed during DNA replication.
Option 2: "They form during metaphase when DNA is being replicated."
This option is incorrect because sister chromatids are actually formed during the S phase of the cell cycle, not during metaphase.
Option 3: "They make up the mitotic spindle within the cell."
This option is incorrect because sister chromatids are not involved in the formation of the mitotic spindle. The mitotic spindle is composed of microtubules and is responsible for separating the sister chromatids during mitosis.
Option 4: "They are part of the lined-up chromosomes in mitosis."
This option is correct. Sister chromatids are formed during DNA replication and remain attached to each other until they separate during the later stages of mitosis. During mitosis, the sister chromatids line up in the middle of the cell and then separate to become individual chromosomes in the daughter cells.
Therefore, the correct answer is "They are part of the lined-up chromosomes in mitosis."