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Instructions – One copy per table:

Instructions – One copy per table: The organisms on the cards all have specific reproductive traits. For each species we want to answer the following. What are the adaptive advantages of the reproductive mode exhibited by each species? Address the following aspects in your answer:

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Instructions – One copy per table:

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  1. Instructions – One copy per table: The organisms on the cards all have specific reproductive traits. For each species we want to answer the following. What are the adaptive advantages of the reproductive mode exhibited by each species? Address the following aspects in your answer: The energy invested in reproduction and parental care The DNA passed to the next generation Selfish genetic elements Mitochondrial ‘warfare’ When you have done this we can go through each one as a group, and your PASS facilitators will list the major points of each aspect on the board.

  2. The Wild Turkey (Meleagris gallopavo) A female turkey can produce fertile eggs in the absence of a male The offspring is often sickly, and nearly always male

  3. Bdelloid rotifers Rotifers are a very cosmopolitan and successful group Males are completely unknown. Females reproduce by parthenogensis. In some species, the young develop to maturity within the body cavity and are born live. In others, eggs are produced and deposited in the vegetation of the pond's edge

  4. Whiptail lizards There are 42 species the Whiptail lizard genus;15 species are clonal Females still have a pairing ritual where females alternate role of “male” Egg production is dependent on pairing ritual

  5. Daphnia Daphnia reproduce by budding in the spring to rapidly populate ponds, then switch to sexual reproduction (meiosis) as the intensity of competition and predation increases .

  6. Slime moulds Slime mould undergoes binary fission as single-celled amoebae under favourable conditions. When conditions get tough, the cells aggregate and switch to sexual reproduction leading to the formation of haploid spores

  7. Snails All land snails are hermaphrodites. They possess both male and female reproductive organs. When two snails meet during the breeding season, mating is initiated by one snail piercing the skin of the other with a calcified 'love dart'. This stimulates the exchange of small packets of sperm. After mating is complete the snails will produce eggs internally, which are fertilised by the sperm that has been exchanged. Some snails may live for 30 years or more, but most live less than 8 years.

  8. Oyster Leeches (Imoginelateotentare) Oyster leeches are predators and are not true leeches, but rather platyhelminthes. They are found in Sydney's Botany Bay Individuals are hermaphrodites with both male and female parts Sexual display resembles penis fencing!! To reproduce they try to stab each other with one or both of their genitals and the first to penetrate inserts sperm and then goes on to spar with another flatworm. The "loser" lays and broods the eggs

  9. Paramecium Under stressful conditions, Paramecium goes from asexual reproduction to sexual reproduction This occurs via conjugation: two paramecia line up side by side and then fuse together Only exchange nuclear DNA

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