Dna Resources Surfnetkids A chromosome is a dna molecule that contains the genetic information for an organism. the chromosomal structure is composed of the organism's dna and special proteins to form the dense, coiled architecture. the chromosome's tertiary structure is a crucial component in transcription regulation and cellular replication, and division. Dna (deoxyribonucleic acid) is the cell’s genetic material, contained in chromosomes within the cell nucleus and mitochondria. except for certain cells (for example, sperm and egg cells and red blood cells), the cell nucleus contains 23 pairs of chromosomes. a chromosome contains many genes. a gene is a segment of dna that provides the code.
Genetics A basic introduction to chromosomes is available from the national human genome research institute. the centre for genetics education offers a fact sheet that introduces genes and chromosomes. the university of utah's genetic science learning center offers a description of chromosomes, including how scientists tell them apart. Chromosomes are thread like structures located inside the nucleus of animal and plant cells. each chromosome is made of protein and a single molecule of deoxyribonucleic acid (dna). passed from parents to offspring, dna contains the specific instructions that make each type of living creature unique. the term chromosome comes from the greek. Chromosomes in humans can be divided into two types: autosomes (body chromosome (s)) and allosome (sex chromosome (s)). certain genetic traits are linked to a person's sex and are passed on through the sex chromosomes. the autosomes contain the rest of the genetic hereditary information. all act in the same way during cell division. Together, the dna, genes, and chromosomes make up the complete set of genetic instructions for every individual—referred to as a genome. these instructions include a person's sex, features, and risk of medical conditions. the human genome project, founded in 1990, mapped the entire human genome to understand how genes and chromosomes.
Comments are closed.