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Haploid


haploid
the chromosome set with only one member of each chromosome pair
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Biology Haploid Cell

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Haploid The haploid number is the number of chromosomes found in the gamete of an individual. This is distinct from the monoploid number which describes the number of unique chromosomes in a single complete set.
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Haploid (meaning simple in Greek) cells bear one copy of each chromosome.
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Dr. Paul Meltzer, of the National Human Genome Research Institute's Laboratory of Cancer Genetics, defines haploid.
related
terms:
chromosome, diploid, genome ...
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Haploid and diploid are terms referring to the number of sets of chromosomes in a cell. Gregor Mendel determined his peas had two sets of alleles, one from each parent. Diploid organisms are those with two (di) sets.
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Haploid, Diploid
Diploid cells (2N) have two complete sets of chromosomes. The body cells of animals are diploid.
Haploid cells have one complete set of chromosomes. In animals, gametes (sperm and eggs) are haploid.
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Haploid
A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants (Gk. haploos, single). Human beings have 23 chromosomes in their reproductive cells.
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Haploid cells can live indefinitely in the haploid condition. However, if two cells of opposite mating types meet, they can fuse and enter the diploid phase of the cell cycle.
This is not as rare event as you might expect.
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Haploid
Only one copy of each chromosome per cell. (Prokaryotes are haploid, although more than one copy of a chromosome may be transiently present in the cell, depending on the rate of DNA replication and the growth rate.) ...
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haploid-diploid life cycle -- Occurs when a multicellular diploid phase, or sporophyte, alternates with a multicellular haploid phase, or gametophyte.
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haploid The reduced, or N, number of chromosomes, typical of gametes, as opposed to the diploid, or 2N, number found in somatic cells. In certain groups, mature organisms may have a haploid number of chromosomes.
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Haploid: A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells o f animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their sex cells. Compare to diploid.
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haploid: cells containing one copy of each chromosome.
hemoglobin: a red pigment that binds oxygen and carbon dioxide molecules and carries them through the bloodstream.
herbivores: animals that eat plants.
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Haploid cell. A cell containing only one set, or half the usual (diploid) number, of chromosomes.
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Haploid having one set of chromosomes
(haplo = half; ploid = a set of chromosomes)
Hematoma local swelling tumor or bruise filled with blood
(hemo = blood; -oma = tumor) ...
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haploid gametophyte
The part of the life cycle of plants having haploid nuclei and giving rise to the sex cells that on fusing produce a diploid stage, usually the sporophyte.
Covered in Lab 5 Sexual Reproduction and Meiosis ...
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Haploid: A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their reproductive cells. Compare diploid.
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Haploid number
(n): The number of chromosomes in the gamete after meiosis. In humans, the haploid number is 23.
Hamilton's Altruism Theory ...
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A haploid egg or sperm cell; gametes unite during sexual reproduction to produce a diploid zygote.
gametophyte
(guh-mee-toh-fite) ...
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The haploid stage of a plant life cycle that produces gametes (by mitosis). It alternates with a diploid sporophyte generation.
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Gametophyte. Haploid stage in the life cycle of a plant
Generation time. The time period from birth to average age of reproduction
Genetic drift. Changes in allele frequencies that can be ascribed to random effects ...
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pronucleus - haploid, gametic nucleus (from sperm or egg) in a fertilized egg, prior to fusion to form a zygote nucleus ...
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cerevisiae haploid cells can be of one of two mating types, Roman a or Greek a. Roman haploids secrete a pheromone that in Greek haploids stimulates processes that lead to mating.
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See Haploid cell. Directional cloning. DNA insert and vector molecules are digested with two different restriction enzymes to create noncomplementary sticky ends at either end of each restriction fragment.
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Gamete -- an haploid cell.gel electrophoresis the process by which nucleic acids (DNA or RNA) or proteins are separated by size according to movement of the charged molecules in an electrical field.
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haplo- single haploid Having a single set of genetic information; describing a cell with one chromosome of each type; used in reproduction to prevent polyploidy.
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As stated supra note 1, each parent donates a haploid number of chromosomes to the offspring, giving it a diploid number. In donating a haploid number of chromosomes, each parent donates one allele to the offspring. See Brian R.
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We [began to work] with yeast cells because they were susceptible to genetics; because they would grow as haploid cells. We couldn't do the same kind of genetics with human cells. We were looking for the things in common between yeast and human cells.
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Two successive nuclear divisions (with corresponding cell divisions) that produce haploid gametes (in animals) or haploid sexual spores (in plants and fungi) having one-half of the genetic material of the original cell.
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[Gr. pro- - a prefix meaning before, in front of; L. nux - nut]. The haploid, or reduced, nucleus of a gamete (ie. sperm and egg). The reduced nuclei of the sperm and egg join together in the fertilized ovum to form the zygote.
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in which a single cell produces four daughter cells each of which contains half of the number of chromosomes of the parent cell. For example, a single diploid spermatogonium (primordial germ cell) will divide meiotically to produce 4 haploid sperm ...
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However, those that do not are simply more like haploid organisms, such as bacteria, than they are like diploid organisms, such as human beings.
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