1 Flashcards
Most cell division results in daughter cells with identical genetic information
DNA
Waist of the duplicated chromosomes, where two chromatids are mostly attached
Centromere
• All DNA in cell constitue the cell
• totality
• single cell
• consist single DNA molecule
Genome
Two sets of chromosomes
Somatic cells
Why cell division important to/ integral part of cell cycle
Because the life of a cell from formation to its own division.
• DNA and protein condensed during cell division
• complex of DNA proteins, grouped together
Chromatin
Sperm and egg
Half as many chromosomes as somatic cells
Gametes
A cell division produces nonidentical daughter cells ( sex cells, gametes)
Meiotic
•Each duplicated chromosomes
• separate during cell division
Two sister chromatids
What is cell cycle and cell division
Cell cycle
• cell growth
• duplication of genetic material (DNA)
• cell division (splits into two cells) or four new cell
Cell division
• a single parent cell divides into either identical 2 daughter cell or four cells, each with half of the number of chromosomes
What is mitosis
Mitosis
• the cell first divide the nucleus into two sets
• followed by the division of the cytoplasm that gives rise to two identical daughter cells
• Somatic Cell/body cell
• non reproductive cells
What is meiosis
• parents cell divides twice to give 4 daughter cells each with half the amount of genetic material compared to parent cell
• the one useful in production of game
•sex cells
Each somatic cell/body cell contains
23 pairs of chromosomes
Each egg/sperm cell contains
23 single chromosomes