| What I did on my summer vacation...For those who are interested - Grand Cayman | | Thanks to those of you who wished me well on my cruise.
There were some requests for me to share my experiences and to share some pictures and I said that I would so here it is...I haven't dowloaded any pictures yet so that will have to come later.The cruise was really nice. We had a good time.We went to 4 ports of call (that's what they call it).We went to Grand Cayman, Belize, Honduras and Mexico.Most of our time spend in these countires was either on the beach or doing a little shopping or both. On Grand Cayman, we took a bus to the beach. They charged 4 dollars a person each way. We spend most of the day there and I did a little snorkeling. The reefs were okay, but not the best I've seen.
The sand was great, the water was great, the weather was great.After we were done at the beach, my daughter wanted to go buy a "guy harvey" shirt. She saw the store as we were coming to shore. We walked over to the store, bought some sunglasses along the way
( I forgot to pack mine) and we picked out a shirt for her and her brother.It wasn't a tremendously exciting day, but it was pleasant and it was relaxing.I'll write some... | |
| | What do you think about a shark that gives birth without having sex? | | Science Daily — Female sharks can reproduce without having sex, scientists have found. A female hammerhead shark has given birth without mating with a male and its offspring has no paternal DNA. Hammerhead shark. (Credit: iStockphoto/John Stublar)Ads by Google Advertise on this site ----------------------------------------------------------------------------------------------------------------------------------------------------------------
An international team of researchers from Queen’s University Belfast, the Guy Harvey Research Institute at Nova Southeastern University in Florida and the Henry Doorly Zoo in Nebraska has found evidence that sharks can reproduce asexually by an unusual method known as “parthenogenesis”. This is the first scientific report of asexual reproduction in sharks.Head of the Queen’s research team and study co-author, Dr Paulo Prodöhl, from the School of Biological Sciences, said: “The findings were really surprising because as far as anyone knew, all sharks reproduced only sexually by a male and female mating, requiring the embryo to get DNA from both parents for full development, just like in mammals.”“The discovery that sharks... | |
| | Virgin Shark Gives Birth!!! | | Female sharks may not need males around anymore, because they can reproduce without having sex, surprised scientists have found.
The startling discovery, announced today, has a long history. It was initially made after the unexpected birth of a baby hammerhead shark in the aquarium of Nebraska's Henry Doorly Zoo in December 2001. The birth surprised zookeepers because the tank only contained female hammerheads, none of which had ever even been exposed to a male during their time in captivity, much less mated with one.The females had all been caught off the coast of Florida as babies themselves.Scientists thought that perhaps the mother had mated with a male before her capture and somehow stored the sperm over the three years, before finally fertilizing her eggs or that she had mated with the male of another species in the tank.DNA profiling now showsed that neither of these possibilities was the answer; the baby shark's DNA only matched up with it's mother's-there was no paternal DNA in the baby at all. The mother had become pregnant asexually, or without ever having sex."The findings were really surprising because as far as anyone knew, all sharks reproduced... | |
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