asexual reproduction
TRANSCRIPT
Reproduction
The process by which an organism produces
others of its same kind. One form of
reproduction is …
Asexual ReproductionA new organism
(sometimes more than one) is
produced from one organism.
The offspring will have hereditary material
uniform with the hereditary material of the
parent organism. This means they will be genetically alike.
Types of Asexual
ReproductionParthenogenesis
Vegetative PropagationFragmentation or Regeneration
FissionBudding
ParthenogenesisProduce eggs that
develop into genetically identical versions of itself.
The population is entirely female. The females lay unfertilized eggs that develop into genetically identical females.
The Whiptail lizard lives in the Sonoran Desert in Arizona. This lizard will lay an egg which will grow into another
lizard.
Vegetative PropagationCommon in
household plants; a piece is cut with visual nodes, placed in water to develop roots, then planted in soil.
Another type is seen in the strawberry plants; they produce runners creating more plants.
FragmentationRegeneration
The ability to restore lost or damaged tissues, organs or limbs.
It is a common feature in invertebrates, like flatworms and sea stars.
Fission• Also called binary fission.• Becoming two by division
of the complete organism.• A type of cell division.
A single celled organism;
paramecium undergoing binary
fission.
Diphtheria bacteria live in the throat and produce
toxins. You are vaccinated for this
bacteria
Budding• Process by which a new, duplicate plant or
animal begins to form at the side of the parent and enlarges until an individual is created.
• Very common in plants.
Hydra in fresh waterTexas Prickly Pear Cactus
Pros• Faster and easier;
one parent so no need for fertilization.
• Doesn’t have to travel, can conserve energy, and be more discreet.
• More reliable, less steps to go wrong.
• No variations in the population; offspring look like the parent.
• Individual may not adapt to changing environment.
• Generally leads to overcrowding and a struggle to exist.
Cons
TAKS ReviewWhich statement about the asexual
reproduction of the cell in the diagram below is correct?
Cell Division
A. Cell A contains the same DNA as cells B and C.B. Cell C has DNA that is only half identical to cell B.C. Cells B and C have identical DNA but not the
same as cell A.D. Cells A, B, C contain completely different DNA.
Animal Cell “A” Animal Cell “C”
Animal Cell “B”
Resources:
• http://classes.design.ucla.edu/Spring05/152BC/projects/saito/ex3/planaria.jpg
• http://microbewiki.kenyon.edu/index.php/Corynebacterium
• http://www.vsf.cape.com/~jdale/science/starfishregenerating.jpg
• http://wappingersschools.org/RCK/staff/teacherhp/johnson/visualvocab/BinaryFissionParamecium.jpg
• http://www.gardenaction.co.uk/fruit_veg_diary/fruit_veg_mini_project_february_2_strawberry2.asp
• http://shakyard.com/planting
• http://judyepstein.com/images/DesertImages/Budding-Purple-LG.jpg
• http://www.waycross.edu/faculty/bmajdi/hydra%20budding.jpg
• Ohio Department of Education – Asexual Reproduction (document in 09-010 folder
• http://ims.ode.state.oh.us/ODE/IMS/Lessons/Web_Content/CSC_LP_S02_BB_L06_I05_01.pdf
• www.tutorvista.com
• http://www.edupic.net/lizards.htm