Chromosomes and Genes (Leaving Cert Biology): Flashcards

Structures in the nucleus containing genetic information

Thread-like form of chromosomes when cells are not dividing

DNA molecule wrapped around histone proteins

Double helix

46 (23 in sex cells)

Section of DNA that codes for a specific protein

Basic units of inheritance

Complete set of all genetic material in an organism

Scientific study of the entire genome

DNA passed from parents to offspring through gametes

Study of how genes and traits are passed down generations

Study of inheritance and gene expression without DNA sequence changes

Chemical groups attach to DNA, turning genes off