Question

Сколько хромосом и молекул ДНК в клетках эпителия человека во время метафазы митоза?

Answer 1

46 хромосом и 46 ДНК

Answer 2

Number of Chromosomes and DNA Molecules in Human Epithelial Cells during Metaphase of Mitosis

During metaphase of mitosis, human epithelial cells typically have 46 chromosomes and 92 DNA molecules.

The human genome is organized into 23 pairs of chromosomes, with each pair consisting of one chromosome inherited from the mother and one from the father. In total, there are 46 chromosomes in human cells. These chromosomes contain the genetic material in the form of DNA molecules.

During mitosis, the process of cell division, the chromosomes condense and become visible under a microscope. In metaphase, the chromosomes align along the equatorial plane of the cell. At this stage, each chromosome consists of two identical sister chromatids, which are connected at a region called the centromere. The sister chromatids contain identical copies of the DNA molecule.

Therefore, during metaphase of mitosis, human epithelial cells have 46 chromosomes and 92 DNA molecules, with each chromosome consisting of two sister chromatids, each containing a DNA molecule.