do now- work with table
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Do Now- work with table. Given the color scheme below: Cell membrane – chalk Chromosomes/chromatin (DNA) – orange Centrioles - yellow Spindle Fibers - purple Centromere – red Nucleus – green Re-create prophase on your desk. Asexual vs. Sexual Reproduction. Make a Venn Diagram. - PowerPoint PPT PresentationTRANSCRIPT
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Do Now- work with tableGiven the color scheme below:
Cell membrane – chalk Chromosomes/chromatin (DNA) – orange Centrioles - yellow Spindle Fibers - purple Centromere – red Nucleus – green
Re-create prophase on your desk
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Asexual vs. Sexual Reproduction
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Make a Venn DiagramAsexual
ReproductionSexual
Reproduction
Both
Types of reproduction in living organisms
Pass DNA from
parent to offspring
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Asexual ReproductionRequires only one parentOffspring have 100% the same chromosomes
as the parent.In other words, the offspring are exact “clones”
of the parent.Most unicellular organisms reproduce this way.MitosisMovie
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Asexual ReproductionBinary Fission
BacteriaProtists
Binary fission is a form of asexual reproduction where every organelle is copied and the organism divides in two.
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Asexual ReproductionPlant
cuttingsVegetative reproduction is a type of asexual reproduction in plants that relies on multi-cellular structures formed by the parent plant. It has long been exploited in horticulture and agriculture, with various methods employed to multiply stocks of plants.
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Asexual ReproductionBudding
Hydra Movie
Budding is a means of asexual reproduction whereby a new individual develops from an outgrowth of a parent, splits off, and lives independently.
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Asexual ReproductionFragmentationFragmentation is a means of asexual reproduction whereby a single parent breaks into parts that regenerate into whole new individuals.
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Asexual ReproductionRegenerationRegeneration occurs when a body part has broken off and the organism grows a new one.
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Asexual ReproductionExamples of organisms that reproduce
asexuallyHydraSea StarStrawberryBacteriaEuglenaParameciumYeast
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Sexual ReproductionRequires two parents that each share ½ of
the genetic information.Offspring share the characteristics of each
parent.Meiosis
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Sexual ReproductionAll the members of the
Animal KingdomFishMammalsAmphibiansBirdsReptilesInsectsCrustaceans
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Sexual ReproductionPlant Kingdom
Flowers are the reproductive organs of plants.
Some flowers have both male and female reproductive organs on the same flower.
Male flower
Female flower
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Sexual ReproductionExamples of organisms that reproduce
sexuallyChickensIguanasLobstersSharksHumansButterfliesSunflowersRoses
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Sexual ReproductionHappens 2 ways
Internally (inside) The egg is fertilized by sperm inside the female
Mammals, birds, reptiles, insects, spidersExternally (outside)
The egg is fertilized by sperm outside the female
The female lays the eggs and then the male fertilizes them. Fish and some amphibians Plants and fungi (pollen and spores)
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Sex cells vs Body cellsBody Cells
Called “somatic” cellsDivide by cell division (mitosis)Growth, repair, and maintenance of the body
Sex CellsCalled “gametes”Include sperm (male) and egg (female) in humansDivide by meiosisEach gamete contains only half the number of
chromosomes (haploid)When the gametes join, the offspring will have a full set
of chromosomes (diploid)