what does exactly produce egg cell?

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scienceclub
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what does exactly produce egg cell?

Post by scienceclub » Fri May 21, 2010 5:58 am

In the process, megaspore divides by mitosis forming 8 nuclei and then membranes partition into a multicellular female gametophyte --- the embryo sac. So egg cell should be created by megaspore? But in the book says that embryo sac produces female gamete. I'm so confused. Thank you for every answer. :D

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JackBean
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Post by JackBean » Fri May 21, 2010 12:47 pm

isn't the female gamete the same as egg?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

scienceclub
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Re: what does exactly produce egg cell?

Post by scienceclub » Fri May 21, 2010 2:13 pm

Yes, egg is a female gametophyte. So megaspore produces a female gametophyte :?:

husseingenelab
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Re: what does exactly produce egg cell?

Post by husseingenelab » Mon Jun 28, 2010 10:50 pm

the megaspore is the transition stage between the sporophyte (2n) and the gametophyte (1n).

kingber
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Re: what does exactly produce egg cell?

Post by kingber » Mon Jul 12, 2010 4:23 am

you can find the answer in the following paper:
Genetic and molecular identification of genes required for female gametophyte development and function in Arabidopsis. Development 132, 603-614

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