Chromosomes

Definition

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made up of protein and a single molecule of deoxyribonucleic acid (DNA).

Related terms

Autosome: Autosomes are chromosomes that are not involved in determining the sex of an individual.

Sex Chromosome: Sex chromosomes are those that participate in sex determination. Humans have two types - X and Y.

Centromere: The centromere is the part of a chromosome where it constricts during cell division, where the spindle fibers attach during cell division to pull sister chromatids apart.