081 Cellular Basis of Reproduction

Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Neil A. Campbell • Jane B. Reece • Lawrence G. Mitchell • Martha R. Taylor
From PowerPoint® Lectures for Biology: Concepts & Connections
CHAPTER 8 The Cellular Basis of
Reproduction and Inheritance
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
• The ife c!ce of " muticeu"r or#"nism incudes
$ de%eoment
$ reroduction
• This se" st"r em'r!o (moru") shows one st"#e in the de%eoment of " fertii*ed e##
$ The custer of ces wi continue to di%ide "s de%eoment roceeds
 
$ This se" st"r is re#ener"tin# " ost "rm
 
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
• Ce di%ision is "t the he"rt of the reroduction of ces "nd or#"nisms
• Or#"nisms c"n reroduce se+u"! or "se+u"! 
CONNECTIONS BETWEEN CELL I!ISION AN REPRO"CTION
 
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
• Some or#"nisms m"-e e+"ct coies of themse%es. "se+u" reroduction
8#$ Li%e &e'ets li%e( )ore or less
$igure !."%
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings
• Other or#"nisms m"-e simi"r coies of themse%es in " more come+ rocess. se+u" reroduction
$igure !."B
•  / ces come from ces
• Ceu"r reroduction is c"ed ce di%ision
$ Ce di%ision "ows "n em'r!o to de%eo into "n "dut
$ It "so ensures the continuit! of ife from one #ener"tion to the ne+t
8#* Cells arise onl+ fro) pree,istin' cells
 
• Pro-"r!otic ces di%ide "se+u"! 
$ These ces ossess " sin#e chromosome. cont"inin# #enes
$ The chromosome is reic"ted
$ The ce then di%ides into two ces. " rocess c"ed  'in"r! fission
8#- Pro%ar+otes reproduce &+ &inar+ fission
$igure !.3B
Prokaryotic chromosomes
$igure !.3%
Prokaryotic chromosome
Plasma membrane
Cell wall
Continued growth of the cell and movement of copies
Division into two cells