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Will multiple births when many egg cells are fertilized outside the body and then implanted produce identical or similar offspring?
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Can two sperm fertilize a woman' s egg?
Yes identical twins is what there called
How are identical and non-identical twins produced?
When an egg is fertilized by a sperm, it becomes a zygote. That zygote goes through cell division to become an embryo.Sometimes, the zygote splits and becomes two separate organisms - they will be identical twins. If the zygote splits and separates multiple times, you can get triplets or even quadruplets. They will all be (more-or-less) genetically identical.If two eggs are released during ovulation and each one is fertilized (by a separate sperm) then you will have fraternal (non-identical) twins. Again, if multiple eggs are released (for example, when a woman is undergoing fertility treatments) and each one is fertilized by a separate sperm, you can get triplets, quadruplets, etc. They will all be genetically different and can even be different sexes.
Why are two cells resulting from meiosis 1 not identical?
Sort of, yes. Meiosis gives offspring a random mixture of their parents genes. The likelihood of multiple offspring having the same random mixture is very small, but very similar mixtures happen frequently and result in strong family resemblance. Offspring aren't identical to each other because they get these different mixtures. If each child had DNA identical to one of their parents then there would be a 50% chance for two children born to the same parents to look exactly the same.
How twins occur?
Twins occur in one of two ways: 1) Identical (Maternal) Twins: These are the twins that are both of the same sex and look identical. This occurs only after the fertilized egg (an egg that has been reached and infiltrated by sperm) splits into two. This is pretty much spontaneous but some people are genetically predisposed to egg splitting. 2) Non- Identical (Paternal) Twins: These may be twins who are of different or the same sexes and may look different. This occurs when an egg cell splits in two and is then fertilized by two different sperm (therefore they have a different set of genes and will look different) or in some cases the mother may release two separate eggs at the time of ovulation which are therefore fertilized by two different sperm (and having two completely different sets of genes, which could result in brother- sister twins). Remember that there are millions of sperm released but only one can fertilize one egg. I don't believe having paternal twins in your family increases the likelyhood of conceiving twins yourself but you may want to research this because I'm not completely certain of the genetics/probability of paternal twins (yet I'm pretty sure it's random). Hope that helps.
What is the consequence of alternative splicing of identical mRNA transcripts?
if you can chop the same mRNA transcripts in multiple ways, then a single gene may code for multiple proteins
Can two sperm fertilize a woman' s egg?
Yes identical twins is what there called
How does occur the fertilized egg become two or three if the fertiltzed egg is only once?
If the twins, triplets -- are identical, then they have developed from a single egg, which split into two (or three).If the multiple birth infants differ, then there were two (or three -- ) eggs released and fertilized at the same time.There are proper terms for these multiple births - have a crack at wikipedia.
Offspring which arise as a contiguous outgrowth of the parent is called?
Offspring which arise as a contiguous outgrowth of the parent is called budding. The process of a parent cell dividing into a large number of genetically identical cells all at once is known as multiple fission.
How are identical and non-identical twins produced?
When an egg is fertilized by a sperm, it becomes a zygote. That zygote goes through cell division to become an embryo.Sometimes, the zygote splits and becomes two separate organisms - they will be identical twins. If the zygote splits and separates multiple times, you can get triplets or even quadruplets. They will all be (more-or-less) genetically identical.If two eggs are released during ovulation and each one is fertilized (by a separate sperm) then you will have fraternal (non-identical) twins. Again, if multiple eggs are released (for example, when a woman is undergoing fertility treatments) and each one is fertilized by a separate sperm, you can get triplets, quadruplets, etc. They will all be genetically different and can even be different sexes.
Why are two cells resulting from meiosis 1 not identical?
Sort of, yes. Meiosis gives offspring a random mixture of their parents genes. The likelihood of multiple offspring having the same random mixture is very small, but very similar mixtures happen frequently and result in strong family resemblance. Offspring aren't identical to each other because they get these different mixtures. If each child had DNA identical to one of their parents then there would be a 50% chance for two children born to the same parents to look exactly the same.
If my husbands grandmother had identical twin daughters and his mother had only sons what are the chances of the boys having identical twins too?
Neither the husband, nor his family history of twins, will have any effect on his sons fathering twins. Whether or not a pregnancy is twins, triplets, etc., depends entirely on the woman. What determines twins (or triplets) is if one egg is fertilized, then splits in two, then this is identical twins; if the egg splits in three, then it's identical triplets. If two eggs are fertilized, then they will be fraternal twins, and not identical, and may not even resemble each other at all; they can even be a different sex from each other. If three eggs are fertilized, then they will be fraternal triplets, and not identical, and can be all female, all male or two of one sex and one of another. The bottom line is, the father neverhas anything to do with whether or not it's a single birth, twins, triplets, etc. It is the mother, and the mother only. Now if multiple birth pregnancies run in her family, then the chances of twins will be higher than families with no history of multiple births.
What type of reproduction has occurred when one organism produces genetically identical offspring?
Asexual Reproduction Asexual reproduction is ONE parent giving rise to offspring with identical genome(s) as the parent Common Types of Asexual Reproduction: Fission (Mitosis in somatic cells) Budding (In Yeast, Hydra) Vegetative Propagation (aka Vegetative Reproduction) (Clonal colonies in trees) Fragmentation (In Fungi) BUT IF THE OFFSPRING HAVE THE SAME GENOME AS EACH OTHER BUT NOT THE SAME AS THE PARENT, then the offspring most likely started as one, but split, for example identical twins
Why are some mothers are giving birth to more than one fetus?
Multiple births are more common recently due primarily to two reasons. 1) More people are taking fertility drugs. If someone is taking fertility drugs that increases their chances of having multiple fetuses. The drugs can cause more ova to be released in a cycle allowing for multiple pregnancies. 2) More people are being artificially inseminated. When someone is artificially inseminated the doctors usually will put in multiple embryos to increase the chances of pregnancy since after they are put in they still need to attach themselves to the uterine wall. To increase the chances of implantation doctors usually put in three embryos. However, all three may implant causing triplets. (that was what happened with octomom, the doctor implanted eight, which most doctors consider bad medical practice and unethical) of course their are two natural ways of having twins, identical twins occur when the embryo (zygote) splits resulting in two genetically identical offspring (since it was made form one egg and one sperm) or fraternal twins which occurs when two ova are released and are each fertilized by a different sperm.
Does sexual reproduction produce more offspring than asexual reproduction?
Asexual reproduction, such as binary fission, is simply a complete copy of anorganism. There is no genetic variation in the daughter organism from the primary organism. However, when sexual reproduction occurs, there are multiple parties contributing, which combines different genotypes.
Why do females make twins?
There are a couple of ways that multiples are conceived: 1) Multiple eggs are released or there is more than one ovulation. Two eggs are fertilized and you have fraternal twins. This can happen with or without fertility drugs. 2) One egg is fertilized and then splits in two resulting in identical twins. This can happen with or without fertility drugs. 3) In cases of in vitro fertilization (IVF), 3 or more fertilized eggs are put back into the uterus. The rationale is that not all of these will implant, though sometimes they do.
What is the number of offspring in cattle?
Cattle usually give birth to one calf. There have been occasions where multiple offspring have been produced.
What do you call 6 babies born at the same time?
SextupletsWhen six babies are born from the same mother and pregnancy, they are called sextuplets. Here are the names for other multiple births;2 - twins3 - triplets4 - quadruplets5 - quintuplets6 - sextuplets7 - septuplets8 - octuplets9 - nonuplets10 - decupletsTwins have three types. Identical Twins, Fraternal Twins, and Siamese or Conjoined. There are a few other subtypes depending on actual gene distribution.Identical twins come from a single fertilized egg that divides into two individuals with identical genes.An incomplete separation between the two would create conjoined or Siamese twins.Fraternal twins come from multiple fertilized eggs.Identical triplets and identical quadruplets have been documented. There was at least one documented set of identical quintuplets (Dionne quintuplets).It is possible that other multiple births would have identical members.The majority of the births of 4 or more babies are from fertilization treatment, or the implantation of multiple fertilized eggs.Multiple birth pregnancies of more than 2 or 3 babies are very high risk pregnancies. The babies usually have low birth weights, and require long-term ICU treatment at birth. There is also an increased risk for developmental difficulties including cerebral palsy.
