generation

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generation

 [jen″er-a´shun]
1. the process of reproduction.
2. a class composed of all individuals removed by the same number of successive ancestors from a common predecessor, or occupying positions on the same level in a genealogical (pedigree) chart.
alternate generation reproduction by alternate asexual and sexual means in an animal or plant species.
asexual generation (direct generation) production of a new organism not originating from union of gametes.
first filial generation the first-generation offspring of two parents; symbol F1.
parental generation the generation with which a particular genetic study is begun; symbol P1.
second filial generation all of the offspring produced by two individuals of the first filial generation; symbol F2.
sexual generation production of a new organism from the cell formed by the union of a male gamete (spermatozoon) and a female gamete (oocyte).
spontaneous generation the discredited concept of continuous generation of living organisms from nonliving matter.

gen·er·a·tion

(jen'ĕr-ā'shŭn),
1. Synonym(s): reproduction (1)
2. A discrete stage in succession of descent; for example, father, son, and grandson are three generations.
[L. generatio, fr. genero, pp. -atus, to beget]

generation

/gen·er·a·tion/ (jen″ĕ-ra´shun)
1. reproduction (1).
2. a class composed of all individuals removed by the same number of successive ancestors from a common predecessor, or occupying positions on the same level in a genealogical (pedigree) chart.

alternate generation  reproduction by alternate asexual and sexual means in an animal or plant species.
asexual generation  production of a new organism not originating from union of gametes.
first filial generation  the first-generation offspring of two parents; symbol F1.
parental generation  the generation with which a particular genetic study is begun; symbol P1.
second filial generation  all of the offspring produced by two individuals of the first filial generation; symbol F2.
sexual generation  production of a new organism from the zygote formed by the union of gametes.
spontaneous generation  the discredited concept of continuous generation of living organisms from nonliving matter.

generation

(jĕn′ə-rā′shən)
n.
1. The people born and living about the same time, considered as a group: the baby-boom generation.
2. The average interval of time between the birth of parents and the birth of their offspring: a social change that took place over three generations.
3. All of the offspring that are at the same stage of descent from a common ancestor: Mother and daughters represent two generations.
4. Biology A form or stage in the life cycle of an organism: the asexual generation of a fern.
5. The act or process of generating; origination, production, or procreation.

gen′er·a′tion·al adj.
gen′er·a′tion·al·ly adv.

generation

[jen′ərā′shən]
Etymology: L, generare, to beget
1 the act or process of reproduction; procreation.
2 a group of contemporary individuals that have descended through the same number of life cycles from a common ancestor.
3 the period between the birth of one individual and the birth of its offspring. Kinds of generation include alternate generation, filial generation, and parental generation.

gen·er·a·tion

(jen-ĕr-ā'shŭn)
1. Synonym(s): reproduction (2) .
2. A discrete stage in succession of descent; e.g., father, son, and grandson are three generations.
[L. generatio, fr. genero, pp. -atus, to beget]

generation

1. A single stage of reproductive descent in the history of an organism.
2. The average or normal time between the birth of parents and the birth of their offspring. In humans, this may be taken to be 25 years.

generation

  1. a group of organisms of approximately the same age, usually derived from the same parents, referred to as the first filial generation (F1).
  2. the act of propagating a species or bringing about the formation of new individuals.

generation

1. the process of reproduction.
2. a class composed of all individuals removed by the same number of successive ancestors from a common predecessor, or occupying positions on the same level in a genealogical (pedigree) chart. Said also of antibiotics or other chemicals derived from parent compounds.

alternate generation
reproduction by alternate asexual and sexual means in an animal or plant species.
asexual generation
production of a new organism not originating from union of gametes. Called also direct generation.
direct generation
see asexual generation (above).
filial generation (first)
the first generation offspring of two parents; symbol F1.
filial generation (second)
all of the offspring produced by two individuals of the first filial generation; symbol F2.
generation interval
the mean age of the parents when the animals that are to replace them are born.
parental generation
the generation with which a particular genetic study is begun; symbol P1.
sexual generation
production of a new organism from the zygote formed by the union of gametes.
spontaneous generation
the discredited concept of continuous generation of living organisms from nonliving matter.
generation time
1. in epidemiological terms the time required between infection occurring and the patient reaching full infectivity.
2. in histological terms the time required to complete one full cell cycle; average of 20 hours for mammalian cells.

Patient discussion about generation

Q. Can cancer skip every other generation in your family? Can cancer be so hereditary as to skip every other generation in a family? On my dad's side of the family it seems like it does. Both my great grandmothers on my father's side had cancer (breast cancer and another type) and a great grandfather had cancer as well. My grandparents did not have cancer. My father ended up having cancer out of the three of my grandparents’ children. Me nor any of my cousins have had cancer. Is it possible any of our children will?

A. If there is a BRCA mutation, it does not skip generations. A child of a person with a BRCA mutation has a 50/50 chance of having the mutation. Those who have the mutation can pass it on. Those who do not have the mutation cannot pass it on.

Q. What alternatives are there for DDD.De generative Disc Disease? I can't sit upright for long periods of time, at times the symptoms are worse and then days and weeks where I feel fine. When I lean into my right legit alleviates it a little but it is excruciating when I shift weight. I also have to sleep with a pillow between my legs and have to shift frequently.I have a lot of strength in my legs and back. But if I stuck in my stomach more and curve my like doing a crunch. the pain is fine.

A. Degenerative disc disease can often be successfully treated without surgery. One or a combination of treatments such as Physical therapy, chiropractic manipulative therapy (CMT), osteopathic manipulation, anti-inflammatory medications such as nonsteroidal anti-inflammatory drugs, chiropractic treatments, Traction (orthopedics), or spinal injections often provide adequate relief of these troubling symptoms.
The option of surgery may be recommended if the conservative treatment options do not provide relief within 2 to 3 months. If leg or back pain limits normal activity, if there is weakness or numbness in the legs, if it is difficult to walk or stand, or if medication or physical therapy are ineffective, surgery may be necessary. You should dicucss this with an orthopedic surgeon.

Q. Hi I have pain in my knee since 3 years that I thought was generated by weight excess I've lost 28kg but the pain is still here, went to the doctor and he diagnosed a meniscus degenerated (direct translation from spanish, could be incorrect). He told me that there is nothing to do about that and that surgery won't help. My problem is that I love running and I can not do it anymore, everytime I try I start having pain in the back side of my knee and it last for days. I'd love to hear about alternatives Roberto

A. Toberro, go to a GOOD health food store and get "Comfrey ointment". Rub this on your knee 2-3 times a day and see how you feel after a month of doing this. I have cured myself of carpal tunnel to avoid surgery doing this and it has also helped me with lower back pain! If you really want to feel better, stop eating any milk or cheese products and sugar! That all contributes to inflammation which arthritis is all about! Be well! :)

More discussions about generation
References in classic literature ?
This impalpable claim, therefore, resulted in nothing more solid than to cherish, from generation to generation, an absurd delusion of family importance, which all along characterized the Pyncheons.
Since this country was founded, each generation of Americans has been summoned to give testimony to its national loyalty.
I think that no man of our generation has a more noteworthy achievement to his credit than this; and it is an achievement of moral earnestness of the strong character of a man who has done a great national service.
But let me tell you how Lop-Ear's gluttony possibly set back our social development many generations.
Nevertheless, as our varieties certainly do occasionally revert in some of their characters to ancestral forms, it seems to me not improbable, that if we could succeed in naturalising, or were to cultivate, during many generations, the several races, for instance, of the cabbage, in very poor soil (in which case, however, some effect would have to be attributed to the direct action of the poor soil), that they would to a large extent, or even wholly, revert to the wild aboriginal stock.
This expression, which may be called a line, was taken up and repeated by the crowd; others might be added to it, and thus gradually, in the course of generations, arose the regular habit of communal composition, composition of something like complete ballads by the throng as a whole.
The generations succeeded each other; the warrior who had committed the sacrilege perished miserably; the Moonstone passed
Today, a generation raised in the shadows of the Cold War assumes new responsibilities in a world warmed by the sunshine of freedom, but threatened still by ancient hatreds and new plagues.
There are six sorts of movement: generation, destruction, increase, diminution, alteration, and change of place.
From generation to generation, a chair sits familiarly in the midst of human interests, and is witness to the most secret and confidential intercourse that mortal man can hold with his fellow.
There his wife, nearly twenty-six years ago, had broken to him, with a blushing circumlocution that would have caused the young women of the new generation to smile, the news that she was to have a child; and there their eldest boy, Dallas, too delicate to be taken to church in midwinter, had been christened by their old friend the Bishop of New York, the ample magnificent irreplaceable Bishop, so long the pride and ornament of his diocese.
The younger generation, conscious of strength and tumultuous, have done with knocking at the door; they have burst in and seated themselves in our seats.

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