What does a chromosome represent?
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.
What does a chromosome consist of?
Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes. The way in which eukaryotes compact and arrange their chromatin not only allows a large amount of DNA to fit in a small space, but it also helps regulate gene expression.
What is each chromosome responsible for?
Each chromosome contains DNA in a double helix structure, which houses thousands of genes along the strand, each with their own loci. Genes are the units that hold codes, which control the building and maintenance of cells. They also control the characteristic traits that are passed on from parents to the offspring.
What does each chromosome determine?
An organism has the same chromosomes for its entire life. The chromosomes are located within each cell nucleus. They provide the directions for how the cell is supposed to function and determine some characteristics about how the individual looks. Each chromosome contains a very complex molecule called DNA.
What are 23rd chromosomes called?
Chromosomes are long sequences of DNA that contain hundreds or thousands of genes. Every person has 2 copies of each of the 23 chromosomes, called chromosomes 1..22 and the 23rd is the sex chromosome, which is either X and Y. Men are XY and women are XX in the 23rd chromosome pair.
What does 23 chromosomes represent?
The 23rd pair of chromosomes as organized in the Human Karyotype are referred to as the sex chromosomes as they are the chromosomes that determine the sexual characteristics of the offspring. If the 23rd pair have an # X chromosome and a #y# chromosome make an #XY# genotype the individual is a male.