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This is a blog about cloning, or asexual reproduction. I was inspired by the groundbreaking http://www.clonaid.com web site, so their services are discussed here, amongst many other things to do with cloning.
Friday, November 20, 2015
And now...daughter of Injaz, the cloned camel
Friday, July 31, 2015
The engineering behind reproductive cloning
One must not forget the human oocyte is only about 100 micrometres in diameter, and requires extremely delicate positioning by micromanipulators. These must be precision engineered to achieve reliability in operation.
Thursday, July 23, 2015
Is cloning legal in Taiwan?
Friday, July 3, 2015
Is cloning legal in the United States?
However, back home in the 50 United States of America, only 15 states have made cloning illegal. Source NCSL.org So, Americans are divided on this issue, and therefore, one can imagine America being a country where people could be cloned routinely, if and when the methods are developed and standardized.
Monday, June 29, 2015
Clonaid.com can help you if you want an 'identical twin'
Identical twins are 'monozygotic', that is, they develop from a single, fertilized egg that later split. Of course, a clone of your loved one shouldn't strictly be called a twin, because twins are the result of one pregnancy, whereas a clone would involve a second pregnancy. Source
Monday, June 22, 2015
Clonaid.com can help you if you can't have children normally
Wednesday, June 10, 2015
Otzi the Iceman and the woolly mammoth
Americans change their minds about cloning humans
Thursday, June 4, 2015
Has a human been cloned yet?
An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.The problem with this definition is the use of the phrase, 'from one ancestor or stock'. This implies to me that the only true clones are females that are produced by implanting somatic material from the mother into the mother's own egg cell, thus producing an organism from only one stock, i.e. the mother supplies the somatic material and the egg cell.
Consequently, the Oxford definition, although suitable for English students, appears somewhat lacking in terms of usefulness in the scientific world. It is for this reason that I think I should adopt the definition in the American Heritage dictionary as the working definition of clone used on this blog,
An organism developed asexually from another and genetically identical to it, such as an animal produced from an egg cell into which the nucleus of an adult individual has been transferred.It would appear that the the first clone of a human being was produced before Dolly the sheep in 1995, but not reported formally until 1998 (Saltus, Richard 1998 "News of human-cow cell raises ruckus." Boston Globe; and McFarling, Usha Lee 1998 "Bioethicists warn that human cloning will be difficult to stop," Knight Ridder) The clone was a copy of a scientist named Dr Jose Cibelli. However, the clone was stopped from developing into a human after just 5 cell divisions at the 32 cell stage. Therefore some controversy will always exist about whether this was the first clone because we don't know if it/he was 'genetically identical' to Dr Jose Cibelli. Interestingly, this would not have been a clone using the Oxford definition, because it was a man.
Please let me know your thoughts on this and maybe the truth will out as they say! There is a poll on the top right side of this blog for you to record your opinion.
Glossary of Terms
Asexual reproduction - a form of reproduction that does not involve meiosis, ploidy reduction or fertilization, and the offspring is a clone of the parent organism because there is no exchange of genetic material. Source Biology-online.org
Reproduction requiring one parent. Offspring are identical to the parent. Source TheFreeDictionary.com
A mode of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it is reproduction which almost never involves ploidy or reduction. The offspring will be exact genetic copies of the parent, except in the specific case of automixis. A more stringent definition is agamogenesis which is reproduction without the fusion of gametes. Source Wikipedia.org
Clone - An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical. Source Oxford Dictionaries
A plant or animal that has the same genes as the original from which it was produced.
Source Cambridge Dictionary
Eugenics - the science of improving a population by controlled breeding to increase the occurrence of desirable heritable characteristics. Source Oxford online dictionary
A pseudoscience with the stated aim of improving the genetic constitution of the human species by selective breeding. Source Medicinenet.com
Euglycaemic - Pertaining to normal blood glucose levels. Source Medical dictionary at TheFreeDictionary
Fibroblast - A cell found in the connective tissue of animals. It is responsible for making collagen and wound healing. Source Wikipedia
Identical twins - two people who are 'monozygotic', that is, they developed from a single, fertilized egg that split. Source Diffen.com
Two babies of the same sex who were born at the same time, developed from the same egg, and look the same. Source Dictionary.cambridge.org
Two children produced in the same pregnancy. Twins who develop from a single ovum are called monozygotic or identical twins. They have identical genomes.
Source Medicinenet.com
Meiosis - a form of cell division happening in sexually reproducing organisms by which two consecutive nuclear divisions (meiosis I and meiosis II) occur without the chromosomal replication in between, leading to the production of four haploid gametes (sex cells). Source Biology-online
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half, and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. Source Nature.com
A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores. Source Oxford Dictionaries
Micromanipulators - equipment used to manipulate the delicate glass micropipettes which perform the injection of donor somatic cells into oocytes in the production of human clones.
Normotensive - Having normal blood pressure. Source Medical dictionary at TheFreeDictionary
Orphan Black - the name of a series on Canadian and American television about human clones. Source Temple Street Productions
Osteophytosis - A disease in which the bones of joints modify themselves as a result of damage within the joint. Source University of Michigan Medical School
Pluripotent stem cell - a stem cell that has the potential to become any one of the three different germ layers of cells. Source Wikipedia
Primates - an order of the class Mammalia, in the Kingdom of Animalia. Source Wikipedia
primate(s) - a member of the order Primates. Source Wikipedia
A very high-ranking member of the Church i.e. a bishop or an archbishop. Oxford Dictionary
Reproductive cloning - reproductive cloning gives life to a new human being. Until recently only sexual reproduction or artificial reproduction techniques, e.g. IVF existed. Reproductive cloning represents a new reproduction technique by which life can be given to an identical twin of the original cell donor. Source Clonaid.com
The cloning of organisms with the goal of planting the blastula produced by the technique into the uterus of an adult female and thus creating a new organism. Source
Dictionary.com
The reproductive cloning of a sentient human being; generally considered ethically unacceptable. Source TheFreeDictionary.com
The genetic duplication of an existing organism especially by transferring the nucleus of a somatic cell of the organism into an enucleated oocyte. Source American Heritage Dictionary 5th Ed.
Human cloning for the purposes of creating a human being. Source Medicinenet.com
Sterile - not able to produce children or young. Source Oxford Dictionaries
Incapable of reproduction; unfitted for reproduction of offspring. Source Biology-online.org
Therapeutic cloning - enables the creation of embryonic stem cells. Source Clonaid.com
The process of creating new organs or other body parts that a patient’s body will accept because they are made from cells that contain their own DNA. Source Macmillandictionary.com
Cloning designed as therapy for a disease. In therapeutic cloning, the nucleus of a cell, typically a skin cell, is inserted into a fertilized egg whose nucleus has been removed. The nucleated egg begins to divide repeatedly to form a blastocyst. Scientists then extract stem cells from the blastocyst and use them to grow cells that are a perfect genetic match for the patient. Source Medicinenet.com
From Dolly the sheep
Cloning has been around for some years, I can remember seeing Dolly the sheep, (the first mammal to be cloned from an adult cell) on TV a long time ago. She was born in 1996. New research is proceeding all the time, and advancements are made in leaps and bounds.
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