AP BIOLOGY

Detailed explanation-1: -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).

Detailed explanation-2: -Chromatid 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-3: -A sister chromatid refers to the identical copies (chromatids) formed by the DNA replication of a chromosome, with both copies joined together by a common centromere. In other words, a sister chromatid may also be said to be ‘one-half’ of the duplicated chromosome. A pair of sister chromatids is called a dyad.

Detailed explanation-4: -A chromatid is a condensed DNA subunit of a chromosome. The two chromatids of a duplicated chromosome are held together at a region of DNA called the centromere (see figure below).

Detailed explanation-5: -A chromosome is a genetic material that has all the features and characteristics of an organism. Derived from Greek, “Chroma” and “Soma” which translates to “color” and “body” respectively. Now, a chromosome is made up of two strands which are identical to each other, and these are called Chromatids.