PATHOLOGY

Detailed explanation-1: -A nurse is discussing basic genetics with a patient. The nurse knows that the basic unit of heredity information is located on what specific part of a chromosome? The basic unit of heredity information located on a specific part of a chromosome is called a gene.

Detailed explanation-2: -A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.

Detailed explanation-3: -Inside almost every cell in your body is a structure called the nucleus. This is the control centre of the cell. Inside the nucleus are 23 pairs of chromosomes.

Detailed explanation-4: -Most people with Down syndrome have an extra copy of chromosome 21 in all their cells. This common form of Down syndrome is called trisomy 21. “Trisomy” means having three copies of a chromosome in your cells instead of the usual two.

Detailed explanation-5: -The basic unit of heredity passed from parent to child. Genes are made up of sequences of DNA and are arranged, one after another, at specific locations on chromosomes in the nucleus of cells.