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BIOLOGY CONCEPTS & CONNECTIONS Fourth Edition 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 odules !." # !.3
081 Cellular Basis of Reproduction
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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
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