Question

How many chromatids are in a chromosome?

Answer 1

The chromosome is decondensed and consists of a single chromatid (long and string-like). DNA is replicated. The chromosome is now divided into two sister chromatids linked by cohesin proteins. Each chromosome pair, known as a tetrad or bivalent, is made up of four chromatids.

Complete answer:
Sister chromatids are two chromatids that are related to each other. Two sister chromatids make up each chromosome. The daughter cells are now in meiosis II, the third and final phase of meiosis. There are two haploid cells at the end of meiosis I.

In the nucleus of eukaryotic cells, chromosomes and chromatids are rod or thread-shaped structures. In most prokaryotes, there is only one circular chromosome (in the webseries we will not focus on this group). The name chromosome comes from the fact that chromosomes may be seen as stainable bodies in a light microscope during cell division (from the Greek chroma = colour and soma = body).

Chromatin is found in chromosomes and chromatids, and it is made up primarily of extraordinarily long stands of DNA (deoxyribonucleic acid), which serves as a carrier for genes and regulatory elements. In addition, chromatin comprises Histones (chromosome proteins) and other proteins involved in the packaging of DNA strands during cell division condensation as well as modest amounts of RNA.

Sister chromatids (with -tid at the end) are two identical (= identical) portions (Chromatids) that result during chromosome replication. There are two stages of meiosis: meiosis I and meiosis II. Homologous chromosomes split during meiosis I, reducing the number of chromosomes in daughter cells to half. Reductional division is the term for this type of division. The centromere splits during meiosis II, but the chromosome number in the daughter cells remains the same. As a result, meiosis II is referred to as an equational division. As a result, at anaphase, a chromosome has one chromatid in mitosis and two in meiosis.

Note: Non-sister chromatids are homologous chromosome chromatids. To sum it up: Sister chromatids are copies of the duplicated chromosome that have the same alleles. Non-sister chromatids are homologous chromosome chromatids that may have distinct alleles.