if the following egg and sperm unite to form a new organism, what will be the resulting genotype?.Br br TE te?
959310
1) All of them will be BbFf\n2) 1/2 will be AAMm and 1/2 will be AaMm (ratio 1:1)\n3) 1/4 will be GgHh, 1/4 will be Gghh, 1/4 will be ggHh, and 1/4 will be gg hh (ratio1:1:1:1)
533795
evolution. Or perhaps speciation.
651360
Since life came about through the process of evolution, that means that genetic mutations allowed some species to survive while others did not. That being said, a genetic mutation would render an offspring different from it's parent. For instance, if two birds mated and a genetic mutation occured, the offspring would have traits that make it different from it's parent, therefore it would not necessarily be the same though it came from two of the same species. Changes in speciation had to happen at some particular sharp point where a species would diverge from its heritage. Therefore if an egg was laid by a bird that was not a chicken, but the embryo inside the egg had the mutation that makes it a chicken that would mean that the egg came first.
187832
The chicken. The Bible tells God created all living animals and then provided for them to reproduce. So the egg was how they reproduced.
371894
The egg. If we draw an arbitrary line between something that's a "pre-chicken" and something that is a chicken, a pre-chicken laid an egg that had a mutation in it, which put it over the chicken line. Genes don't change during one lifespan, only in the offspring.
514768
Final and scientifically agreed answer, thanks to some scientists with too much time on their hands\n\nExtract from the Guardian:\n\n"Whether the panel solved that debate is not clear, but they were unanimous on the correct chicken/egg pecking order. John Brookfield, an evolutionary geneticist at the University of Nottingham said the solution involves piecing together the speciation event in which chickens first evolved.\n\nHe imagines two non-chicken parents getting together and giving rise to the first individual of a new species because of a genetic mutation. "The first chicken must have differed from its parents by some genetic change, perhaps a very subtle one, but one which caused this bird to be the first ever to fulfil our criteria for truly being a chicken," said Prof Brookfield.\n\n"Thus the living organism inside the eggshell would have had the same DNA as the chicken that it would develop into, and thus would itself be a member of the species of chicken," he added."
950566
You need an egg and sperm to create life.\n\nOne without the other will die.\n\nEnd of story...pay attention in biology next time.
224362
the egg. it was formed by organisms and eventually hatched.\n\ni first thought, well, if the chicken came first, it had to come from and egg, but then that egg would have to come from the chicken, then that chicken had to had come from and egg, and so on and forth
13863
This is actually very easy to answer, based on evolution the egg had to come first. Evolution works like this: There are slight changes in the genetic information of the sex cells (i.e. eggs and sperm) of individuals that are passed on to the offspring of any two parents. These changes in the genetic makeup are called mutations. Mutations can either have: 1) A deleterious effect on the offspring (genetic disorders may arise, many times these are lethal); 2) sometimes these mutations may be advantageous, making an individual more fit than its neighbors (this is sometimes referred to as conferring an advantage); or 3) these mutations can have no effect, making no change from parent to progeny.\n\nIn the case of the chicken, it must have evolved from something else that became less fit than the chicken and eventually becoming extinct. The chicken became a chicken from this other organism through mutations that built up over time in subsequent generations. However, whatever the genetic makeup that finally became defined as a chicken, that individual was first conceived and developed in an egg before being hatched. The egg and sperm that fused to produce the chicken didn't bypass the period of gestation within an egg that had developed in the bird family millions of years before the chicken came along.\n\nSo the simple answer to this question is the egg came first -- unless you believe in fairy tales?\n\n\nTo Dr. Bob (below), what determines how an egg is labled: The organism that layed it, or the organism that's inside it?
55901
The eggs and sperm are reabsorbed by the body if they  can not be used.\n\nLink below will give you all the details.
868091
If you mean the hen's egg and not just any egg, the answer is neither.  They both evolved from more primitive forms together.
152438
#1)  Primarily by mutation.  A mutation must occur a germ cell (cells that produce sperm and eggs).  This can produce progeny with novel traits.  This is fairly rare event (one out of every billion nucleotides copied during meiosis).  Our body has ways of fixing these errors, but this is the biological basis of evolution.\n#2)  By crossing over.  During meiosis, parental chromosomes will swap pieces with each other.  For example, I used pieces of my mother's chromosome #1 and my father's chromosome #1 when I made the chromosome #1 that I passed to my daughter.  I passed a different combination of pieces to construct a chromosome #1 for my second daughter.\n#3)  By independent assortment during meiosis.  So not only did I make novel chromosomes out of pieces of my parents chromosomes, but I created a gamete using a unique combination of my mother and father's chromosomes.  For example I might have used chromosomes 1-11 of my father's (with pieces of my mother's chromosomes 1-11) and numbers 12-22 of my mother's (with pieces of my father's chromosomes 12-22).  For my second daughter it could have been totally different.  It is a unique situation each time!  No two gametes are the same.
696921
Meiosis is the type of cell division by which germ cells (eggs and sperm) are produced. Meiosis involves a reduction in the amount of genetic material
962730
The word you are looking for is 'parthenogenesis', which is defined as the development of an egg into an embryo without the participation of a sperm.\n\nIn fact, many invertebrates, and even some vertebrates do this.
417879
This question appears regularly in the question file, so let's take a shot at it. \n\nIn nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote. \n\nChickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken. \n\nPrior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.
868417
Well, for one, reproduction would be no fun:  no sex.  \n\nFor another, biodiversity would be almost nonexistent because when cells reproduce asexually they produce carbon copies of themselves.  So if I were to asexually reproduce I would end up with a child whose only difference from me would be its age.  It might even be the same size as me, since the result of mitosis is two identically sized cells.
498613
In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote. Chickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken. Prior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.