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Parthenogenesis - PowerPoint PPT Presentation


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Parthenogenesis. Virgin Birth. Normal S exual Reproduction (humans). Female gamete 23 chrom. Male gamete 23 chrom. Human child 46 chromosomes. Parthenogenetic Reproduction. Female gamete 23 chrom. Female gamete 23 chrom. Parthenogenetic offspring 46 chromosomes. Bdelloid rotifers

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PowerPoint Slideshow about 'Parthenogenesis' - sonia-mosley


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parthenogenesis

Parthenogenesis

Virgin Birth

normal s exual reproduction humans
Normal Sexual Reproduction (humans)

Female gamete

23 chrom.

Male gamete

23 chrom.

Human child

46 chromosomes

parthenogenetic reproduction
Parthenogenetic Reproduction

Female gamete

23 chrom.

Female gamete

23 chrom.

Parthenogenetic offspring

46 chromosomes

slide4

Bdelloid rotifers

(Bdelloidea species)

Photo: Wim van Egmond/Visuals Unlimited Inc.

Freshwater water flea

(Daphnia magna)

Photo: Wikipedia

slide5

Cape honey bee

(Apismelliferacapensis)

Photo: Animals Animals/Superstock

Marmorkrebs

(marbled crayfish)

Photo: Wikipedia

slide6

New Mexico whiptail (Aspidoscelisneomexicana)

Photo: National Prk Service

Komodo dragon (Varanuskomodoensis)

Photo: wikipedia

slide7

Boa constrictor

(Boa constrictor)

Photo: Tom Brakefield/Stockbyte

Vietnamese walking sticks (Medauroideaextradentata)

slide8

Bonnethead shark

(Sphyrnatiburo)

Photo: iStockphoto/Thinkstock

Zebra shark

(Stegostoma

fasciatum)

slide9

Coral catshark

(Atelomycterus

marmoratus)

Coral catshark egg

found in O15

March 2013

potential
Potential:

Advantages

Disadvantages

Decreased genetic variability

  • Ability to procreate without males
  • Stem cell research?