NEET BIOLOGY

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 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-3: -The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere. During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle.

Detailed explanation-4: -A chromosome is made up of two Identical Sister Chromatids. And each sister chromatid is joined at the centromere.

Detailed explanation-5: -They are called sister chromatids because all the genes and to be specific all the alleles are exactly the same because they are identical copies (Figure 1). Sister Chromatids = Replicated Chromosomes Attached at the Centromere.