What are chromosomes made up of?The Chromosomes:Chromosomes are found in the nucleus of every cell from living things. They are the genetic material that gets replicated during the life cycle of a cell such as during the phase of cell division. When a cell divides, new cells are formed, ...
How do cells and tissues specialize? What is the effect of interferons on neighboring cells? What happens to a cell's volume and surface area as it becomes larger? What are gustatory cells? What are chromosomes made up of? What are the 2 main causes of cell division?
According to Medline Plus, in every cell, humans possess 23 pairs of chromosomes, among which the sex chromosomes constitute one pair. The X chromosome, comprising roughly 155 millionDNAbase pairs, makes up around 5% of the total DNA in cells. The Y chromosome extends over more than 59 milli...
Deoxyribonucleic Acid is found in the nucleus of the cell. It is a double stranded molecule that contains the genetic code and is the main component of chromosomes. DNA is the blueprint of organisms. Nucleotides are the basic unit of DNA and they are made up of sugar, phosphate, and one...
Direct interaction of the Polycomb protein with Antennapedia regulatory sequences in polytene chromosomes of Drosophila melanogaster. EMBO J. 10, 153–162 (1991). CAS PubMed PubMed Central Google Scholar Gindhart, J. G. Jr & Kaufman, T. C. Identification of Polycomb and trithorax group ...
In mitosis, the diploid “parent” cell divides and produces two diploid “daughter” cells. However, in meiosis, the parent cell produces four haploid daughter cells (each containing half of the parent cells chromosomes, or 23 chromosomes). The critical difference between mitosis and meiosis is ...
These chromosomes are made up of hundreds of individual alleles, which are inherited from parents and are expressed as either dominant or recessive traits. Each allele or gene is responsible for a specific single part of the phenotype in these simplified terms. ...
Matthias Schleiden contends that all plants are made up of cells 1839: Theodor Schwan declares that all animals are made up of cells 1848: Wilhelm Hofmeister describes mitosis 1855: Rudolf Virchow declares that all cells come from pre-existing cells 1859: Darwin publishes his Origin of Spe...
Composition and Structure of ChromosomesChromosomes are contained within the nucleus in eukaryotic cells, but can also be found in some of the other organelles such as mitochondria (where DNA is packed into a small circular chromosome). In prokaryotes (e.g. bacteria), on the other hand, ...
More specifically, gene regulators turn different genes on and off in different cells, to control cell function. The long molecules of DNA, containing your genes, are organized into pieces called chromosomes. Different species have different numbers of chromosomes. Humans usually have 46 chromosomes,...