[net.sf-lovers] Parthenogenesis

ayermish@ATHENA.MIT.EDU (10/30/85)

From: Aimee Yermish <ayermish@ATHENA.MIT.EDU>

Works ok with frogs (poke an egg with a platinum needle and it thinks
it's been fertilized.  Frogs were never known for their intelligence).
However, you have to remember that an egg cell only has half the number
of chromosomes as a normal somatic cell.  Among other things, this would
mean that all recessive mutations would be expressed.  A good proportion
of those are lethal.   The sex of survivors is unclear.  One Y
chromosome guarantees maleness, but I believe that two X chromosomes are
needed to produce a female.  Also, what would happen when the haploid
creature tried to produce more egg cells?  Meiosis requires the
existence of homologous chromosomes.  The problem is that haploid individuals
just don't occur in humans.  Now yes, this is sf, but I just find the
idea a little too far over towards the side of the unreasonable.  If the
author wanted to write a story about a planet inhabited entirely by
female frogs with platinum needles. . .  
--Aimee
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sorry about the previous aborted message, if it get to you.  This is the
one that should go in.  --ay