Download WHAT IS THE DIFFERENCE BETWEEN ASEXUAL AND SEXUAL

WHAT IS THE DIFFERENCE BETWEEN
ASEXUAL AND SEXUAL REPRODUCTION?
 Asexual Reproduction:
 Used by itty bitty prokaryotes (no nucleus) to reproduce
 Used by eukaryotes (like us) to grow new cells and
replace dead cells.
 Passes on all DNA
 Each “daughter” cell is a
clone of the parent.
ASEXUAL REPRODUCTION
ASEXUAL REPRODUCTION
ASEXUAL VS SEXUAL REPRODUCTION
 Sexual Reproduction:
 Mixes DNA
 Produces half the number of chromosomes (haploid)
 Cells involved are called gametes (ova and sperm)
ASEXUAL VS SEXUAL REPRODUCTION
ASEXUAL
 Mitosis
SEXUAL
 Meiosis
ASEXUAL VS SEXUAL REPRODUCTION
What other information can you add to the Venn-Diagram?
CELL DIVISION
 Prokaryotes use a simple form
called binary fission.
 Eukaryotes use the Cell Cycle.
 Interphase
 Mitosis
 Cytokinesis
WHAT IS THE CELL CYCLE?
 A sequence of growth and division in the life of
a cell.
 What is the human growth cycle like?
INTERPHASE
 During interphase the cell grows and DNA
replicates (makes copies)
 Divided into three stages
 G1 (Growth/Gap 1)
 S (Synthesis)
 G2 (Growth/Gap 2)
 Most of the cell’s life is spent in interphase.
ADD TO THE DIAGRAM IN YOUR NOTES
WITH INFORMATION FROM THE NEXT
SLIDE.
G1
(growth;Gap 1)
11 hrs.
• Rapid cell growth
• Cell doubles in size
• Enzymes + organelles double in
number
S=
Synthesis
• Growth
esis
n
i
k
o
t
Cy
sis
o
t
i
M
• DNA makes a copy
of itself
G2=Gap 2
7 hrs.
• Rapid Growth
• Final preparation for
cell division
3 hrs.
MITOSIS
 Division of the cell’s nucleus
 Chromosomes are split into two identical sets
 Many steps, we will get there!
CYTOKINESIS
 Cyto = cell
 Kinesis = moving
 Cytokinesis is when the cytoplasm divided and
the two daughter cells are made.
CYTOKINESIS
REVIEW 3 – COPY & ANSWER THE
FOLLOWING QUESTIONS ON THE LEFT
SIDE OF YOUR IAN
 What is a trait of asexual reproduction?
 What is the term for when human cells divide
asexually?
 What is a trait of sexual reproduction?
 What is the term for when human cells divide
sexually?