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Another word used meaning without sex?
Platonic as in a non-sexual relationship between friends. Parthenogenetic as in creating an offspring without sex.
What is the significance of artificial parthenogenesis?
Although parthenogenesis does not appear to occur naturally in primates, an unfertilized egg can be induced to form an early ball of cells called a blastocyst, from which stem cells and stem cell lines can be derived. Stem cells from these lines can then be differentiated into specific cell types that may be used in research or as part of a cell transplant therapy to treat human diseases. The technique for producing human stem cell lines through parthenogenesis was developed by International Stem Cell Corporation of Oceanside, California, and can produce two different kinds of parthenogenetic stem cells: (1) those known as heterozygous parthenogenetic stem cells, which carry the genetic makeup from both parents of the egg donor and (2) homozygous parthenogenetic stem cells, which carry the genetic makeup of only one of the parents of the egg donor. Both heterozygous and homozygous parthenogenetic stem cells are functionally comparable to embryonic stem cells. Those known as homozygous parthenogenetic stem cells are produced through a proprietary process that produces cells containing genetic makeup from only one half of donor's genome, but with the normal number of chromosomes, thus greatly simplifying the process of matching therapeutic cells to patient's immune system in therapeutic transplants. The use of homozygous parthenogenetic stem cells is expected to permit cells from a single stem cell line to match the key HLA factors of up to 350 million potential patients, thus reducing the need for immune suppressing drugs in human cell transplant therapy.
What is the greatest benefit of African honey bees?
Commitment to sustainable populations is the greatest benefit of African honey bees. The insects in question (Apis mellifera scutellata) prioritize such colony-defending and hive-expanding behaviors as asexual, parthenogenetic reproduction; early, industrious foraging; and pollen (over nectar) accumulation, processing, and storage.
What type of stick insects dont lay eggs?
Some species of stick insects, particularly certain parthenogenetic ones, do not lay eggs and instead reproduce through a process called parthenogenesis. In this form of reproduction, females can produce offspring without mating, resulting in clones of themselves. This is common in some populations of the genus Timema and other stick insects where males are rare or absent. As a result, these species can thrive in isolated environments without the need for males.
How does parthenogenesis relate to reproduction?
Parthenogenesis is a process whereby a single egg can develop without the presence of biologic material (sperm) from a male. In some lower animals parthenogenesis can lead to reproduction naturally, for example, it is a common form of reproduction in flies, ants, lizards, snakes, fish, birds, reptiles, amphibians, honeybees, and crayfish. Eutherians (mammals with a placenta) are not capable of this form of reproduction; therefore parthenogenesis is not known to occur naturally in primates or most other higher order animals. The advantages of parthenogenetic reproduction are that without sex, parthenogenesis takes less energy and allows for more rapid reproduction in the short term. This is great for insects that may want to increase their numbers quickly to inhabit a new territory. In addition, it allows reproduction to occur in some animals when sexual reproduction is impossible; for example, if a female were isolated and unable to find a male with whom to mate. Finally, if a species is already well adapted to its environment, it may not pay to expose the species to the genetic variation brought by sexual reproduction. However, on the flip side, because only one individual's genes are passed on to the offspring, parthenogenesis limits genetic diversity and without diversity, genetic mutations can amplify within a species. Although mammals do not reproduce using parthenogenesis, parthenogenesis can be used to cause an unfertilized human egg to form a ball of cells called a blastocyst from which human stem cell lines can be created. These stem cell lines (called parthenogenetic stem cell lines) have been shown in published research to have the same capacity as an embryonic stem cell line to create, through differentiation, the basic human tissues that lead to all cells in the human body. In addition, researchers have shown that specific human cells created from parthenogenetic stem cell lines, such as liver-like cells, retinal pigment cells, nerve cells or beating heart-like cells may be useful for research and for therapies based on cell implantation. However, the parthenogenetic blastocyst, even if implanted back into the womb of the donor, would not produce a viable fetus so nothing that could become a viable human life is ever destroyed.
What is the difference between parthenogenesis and hermaphroditism?
parthenogenesis - the process by which some plants and insects develop from a female cell without needing to be fertilized by a male cell Hermaphroditic animals have both male and female reproductive systems. Hermaphroditism provides a means for animals to reproduce sexually without finding mates. For example, individuals in many species of tapeworms fertilize their own eggs. In other species such as earthworms, each individual serves as a male and female during mating, both donating and receiving sperm. Mutual donating and receiving sperm does not occur in parthenogenetic.
How many pairs of chromosomes are found in a Split Pea cell?
Normal egg cells are haploid and a haploid cell can`t have pair of chromosomes.Pair of chromosomes actually means homologous pairs of chromosomes which are not present in eggs. Human egg contains 23 unpaired chromosomes and Drosophila egg contain 4 unpaired chromosomes which can`t be called 2 pairs as they are not homologous. Some abnormal eggs eg of parthenogenetic animals may possess paired chromosomes.
What does descriptor mean?
It mean what you don't what does it mean.
What does mean mean in statistics?
Mean is the average.
What does GRI mean?
What does GRI mean? What does GRI mean?
What do the hardens mean mean?
The haudensaunee mean irguios
Do you say 'what does it mean' or 'what is it mean'?
The correct usage is "what DOES it mean"
