8. Variation:the changes that occur during the
process of replication or formation of DNA
copy,these changes are known as variation.
Parent DNA Child DNA
9. Imagine the confusion when everybody arounds
you look same.
• Creates Diversity
IMPORTANCE OF VARIATION
12. Modes of Reproduction
• Body cells(somatic cells)
• Only one parent involved
2n
2n 2n
M
I
T
O
S
I
S
• Two parents involved
Sexual reproduction
• Reproductive cells(germ cells,
gametes
Asexual reproduction
n
n
M
E
I
O
S
I
S
15. Evaluation
A L T Y I K G M
S M Z G H P N K
E A O T O G I F
X L Y E A L D N
U E X J B K D K
A Q W D K A U D
L F V C V C B G
Unicellular animal
Clues:
One of the two sexes
Mode of reproduction
Reproduction without union of gametes
Type of asexual reproduction