C-Fern Privacy Policy

Our Commitment To Privacy C-Fern Project respects each individual’s right to personal privacy.  We will collect and use information through our Web site only in the ways disclosed in this statement.  This statement applies solely to information collected at C-Fern.org. The Information We Collect This notice only applies to all information collected or submitted on […]

C-Fern Terms of Use

  By using our site, you are agreeing to comply with and be bound by the following Terms of Use. Please read and review the following Terms of Use carefully. If you do not agree to these terms, you should not use this site. The term “C-Fern” or “C-Fern Project” or “us” or “we” or […]

How long can C-Fern sperm swim?

C-Fern sperm can swim for over two hours at 25 °C in the Sperm Release Buffer (SRB) as described in the C-Fern Chemotaxis exercise – Chemical Attraction. (See also the C-Fern Manual for the formulation of SRB.) Sperm will swim a much shorter time in plain distilled water, although it is more than sufficient to […]

How big are C-Fern spores?

C-Fern spores are quite large for fern spores, about 120 µm (microns). Surprisingly, human eggs, i.e. secondary oocytes, and C-Fern spores are similar in size and shape. A vial containing 300,000 C-Fern spores (ca. 240 mg) is a graphic demonstration of the number of eggs (primary oocytes) in the ovaries of a 7-year-old girl. Only […]

Where can I obtain the C-Fern antheridiogen?

C-Fern antheridiogen, the pheromone which determines the sexual phenotype of gametophytes, can be easily harvested and used in experiments. Use old cultures of gametophytes, preferably those which are not contaminated, and carefully scrape the gametophytes from the surface. Next, freeze and then thaw the agar. The antheridiogen containing liquid will separate from the agar and […]