CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two identical copies of the same chromosome formed by DNA replication, attached to each other by a structure called the centromere.
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The cytoskeletal structure of eukaryotic cells that forms during cell division to separate sister chromatids between daughter cells.
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A thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
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A chromosome that has been newly copied, but they are both still joined together.
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Detailed explanation-1: -A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division. The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere.
Detailed explanation-2: -A chromatid is a replicated chromosome having two daughter strands joined by a single centromere (the two strands separate during cell division to become individual chromosomes). From: Human Biochemistry, 2018.
Detailed explanation-3: -Chromatids may be sister or non-sister chromatids. A sister chromatid is either one of the two chromatids of the same chromosome joined together by a common centromere. A pair of sister chromatids is called a dyad.
Detailed explanation-4: -Two chromatids are required to form a chromosome. A chromatid is one of two identical structures of chromosomes which already undergo replication. Two chromatids in a chromosome are known as sister chromatids.
Detailed explanation-5: -A chromosome is a thread-like structure that is composed of DNA and protein. It carries all the genetic materials of an organism. This is passed from parent to offspring. Chromatid is one of the halves of a chromosome. A chromosome contains only one chromatid.