genetics

Repro/genetics

• DNA:
• a substance that contains genetic info
• short for deoxyribonucleic acid
• double helix
• Chromosomes:
• a structure found in the nuclei
• contains 1 long DNA molecule
• come in pairs
• Genes:
• section off the long strand of DNA found in chromosomes
• contains instruction for a characteristic
• Sex chromosomes:
• chromosomes that determine the sex of an organism
• in humans, males have 1x + 1y and females have 1x + 1x
• Cell division:
• the splitting of a parent cell to form 2 identical daughter cells
• the daughter cells have the same genetic info as the parent cell