CHILD DEVELOPMENT PEDAGOGY

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 pair of sister chromatids is called a dyad. Once sister chromatids have separated (during the anaphase of mitosis or the anaphase II of meiosis during sexual reproduction), they are again called chromosomes, each having the same genetic mass as one of the individual chromatids that made up its parent.

Detailed explanation-3: -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.

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: -Chromatids of two homologous chromosomes are called non-sister chromatids, and like homologous chromosomes, they carry the same genes but are not identical to each other.