diploid vs. haploid
Post on 15-Feb-2016
204 Views
Preview:
DESCRIPTION
TRANSCRIPT
DIPLOID• Diploid = 2(n)• In humans:
• n=23 chromosomes• 2(n)= 46 total chromosomes
• 2 sets of each chromosomes
• Somatic cells are diploid• Body Cells (nerve, muscle, bone, etc.)
• Haploid = n• In humans:
• n= 23 chromosomes• Only 23 chromosomes total
• 1 set of each chromosome
• Gametes are haploid• Sex Cells (Sperm & Egg)
HAPLOID
DIPLOID VS. HAPLOID
Cell DivisionMitosis vs. Meiosis
MitosisPurpose:•For growth and repair•Type of Asexual reproduction for some unicellular organisms
Mitosis
Takes place in somatic cells (body
cells).
Mitosis•Starts diploid (2n) and ends diploid (2n).•One cell division
Mitosis
•One parent makes 2 daughter cells that are identical to the parent•No genetic variation
•Phases of Mitosis1.Prophase2.Metaphase3.Anaphase4.Telophase
Meiosis
Purpose: •Creation of gametes (reproductive/ sex cells)
Meiosis•Takes place in gametes (sex cells).
Meiosis•Starts diploid (2n) and ends haploid(n).•2 cell divisions
Meiosis•One parent makes 4 daughter cells that are genetically different to the parent•Creates genetic variation• Crossing over of chromosomes is what
allows for genetic variation
•Phases of Meiosis1.Prophase I & II2.Metaphase I & II3.Anaphase I & II4.Telophase I & II
top related