Thursday, February 11, 2010

How many sexes do mushrooms (or fungi in general) have?

a friend of mine told me mushroom or fungi i cant remeber which ( i know mushroom is a fungus) unlike humans and most other animals have thousands of different sexes.How many sexes do mushrooms (or fungi in general) have?
As far as I know, fungi have only two sexes, as do all other ';plants'; ( I know they belong to a separate kingdom, but they still have two mating types). The hyphae (underground part of the fungus) are haploid (one set of chromosomes, as in all gametes, like our eggs and sperm). When the two mating types fuse, they form a diploid (2 sets of chromosomes) zygote that can go on to produce spores for asexual reproduction.How many sexes do mushrooms (or fungi in general) have?
I have NEVER heard that in Biology class.





The members of the kingdom fungi reproduce differently depending on their situation. Most fungi produce billions of spores. When these spores are released, one has to find the proper temperature, moisture, and light level to grow into a mature organism.





The fact that most fungi reproduce by spores means that they reproduce by themselves, which means they are asexual, which means they do not have thousands of different sexes.





You also have to consider WHY an organism would have thousands of different sexes. It wouldn't aid in their survival AT ALL.





For example, some plants produce pollen. When this pollen is carried off by the wind, it has a 50 % chance of finding a female and reproducing. If there were a thousand different sexes, there'd theoretically be a 1/1000 chance of it finding the right gender.

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