Download - 2015-Asexual and Sexual Reproduction Notes
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AsexualAsexual&&
SexualSexualReproductionReproduction
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AsexualAsexualReproductionReproduction Type of reproduction in which aType of reproduction in which a
new organism is produced fromnew organism is produced fromONEONE parent and the ospring isparent and the ospring is
identicalidentical to the parent.to the parent.
Occurs in most plantsOccurs in most plants
!acteria protists and low!acteria protists and lowin"erte!rates.in"erte!rates.
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AsexualAsexualReproductionReproduction One parentOne parent
OspringOspringare identicalare identical
to the parents.to the parents.One #arent
$denticalOspring
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AsexualAsexualReproductionReproduction Ad"antages and %isad"antages ofAd"antages and %isad"antages of
Asexual ReproductionAsexual Reproduction Ad"antages $dentical to parent soAd"antages $dentical to parent so
will get allwill get all good
good characteristicscharacteristics..
%isad"antages $dentical to parent%isad"antages $dentical to parent
so will also get !ad characteristicsso will also get !ad characteristicsand is less a!le toand is less a!le to adapada
pt to thet to the
en"ironmenten"ironment..
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AsexualAsexualReproductionReproduction Types of AsexualTypes of Asexual
ReproductionReproduction RegenerationRe
generation organism uses organism uses
cell di"ision tocell di"ision to re'growre'
grow !ody!ody
parts.parts. Example( star)sh salamanderExample( star)sh salamander
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AsexualAsexualReproductionReproduction Types of Asexual ReproductionTypes of Asexual Reproduction
*egetati"e*e
getati"e #ropagation#ro
pagation results in results ina new plant that is geneticallya new plant that is genetically
identicalidentical to the parent plant +ato the parent plant +a
clone,.clone,.
Examples( straw!erry plantExamples( straw!erry plant"egeta!les and crops."egeta!les and crops.
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AsexualAsexualReproductionReproduction Types of AsexualTypes of Asexual
ReproductionReproduction -udding-udding organism that produces organism that produces
a !ud thata !ud that !reas!reas awayaway to li"e onto li"e on
its own.its own. Example( hydraExample( hydra
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AsexualAsexualReproductionReproduction Types of Asexual ReproductionTypes of Asexual Reproduction
-inary-inary /ission/ission used !y used !y!acteria an organism!acteria an organism
whose cells do notwhose cells do not
contain a nucleuscontain a nucleus copycopy
thenthen di"idedi"ide into twointo twoidentical organismsidentical organisms Example( !acteriaExample( !acteria
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SexualSexualReproductionReproduction TwoTwo parentsparents
Ospring areOspring areaa com!inationcom!ination ofof !oth!oth parentsparents
and areand are
thereforetherefore dierentdierent from each parent.from each parent.
uni0ue 1 di"erseospring
Two#arents
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SexualSexualReproductionReproduction Ad"antages and %isad"antages ofAd"antages and %isad"antages of
Asexual ReproductionAsexual Reproduction Ad"antages "ariety and1orAd"antages "ariety and1or di"ersitydi"ersity ofof
ospring +color shape si2e intelligenceospring +color shape si2e intelligence
a!ility etc., 3ore a!le toa!ility etc., 3ore a!le to adaptadapt toto
en"ironmental changes.en"ironmental changes.
%isad"antages uni0ueness sometimes%isad"antages uni0ueness sometimestraits needed fortraits needed for sur"i"alsur"i"al are notare not passedpassed on.on.
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SexualSexualReproductionReproduction Types of Sexual ReproductionTypes of Sexual Reproduction
#lants#lants when the reproducti"e cells when the reproducti"e cellsof one plant fertili2eof one plant fertili2e
+pollinate, the+pollinate, the
reproducti"e cellsreproducti"e cells
of another plant. This producesof another plant. This producesseeds that can growseeds that can grow
into a new plant.into a new plant.
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SexualSexualReproductionReproduction Types of Sexual Reproduction.Types of Sexual Reproduction.
AnimalsAnimals when the reproducti"e when the reproducti"ecells of onecells of one
animal fertili2eanimal fertili2e
the reproducti"e cells of anotherthe reproducti"e cells of another
animal. Thisanimal. Thisproduces aproduces a
!a!y +em!ryo,.!a!y +em!ryo,.