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Haploid in Biological Definition

Cell growth

... the parental cell originally had. This is the haploid amount of DNA, often symbolized as N . Meiosis is used by diploid organisms to produce haploid gametes. In a diploid organism such as the human organism, most cells of the body have the haploid amount of DNA, 2N . Using this notation for ...

Ploidy

... Contents showTocToggle("show","hide") 1 haploid 2 Diploid 3 Haplodiploidy 4 ... 5 Aneuploidy 6 Polyploidy haploid haploid (meaning simple in Greek ) cells bear one ...

Ploidy

... Contents showTocToggle("show","hide") 1 haploid 2 Diploid 3 Haplodiploidy 4 ... 5 Aneuploidy 6 Polyploidy haploid haploid (meaning simple in Greek ) cells bear one ...

Meiosis

... by which a diploid parent produces four haploid daughter cells. The process includes the two ... are pulled towards opposing poles. Two haploid sets of chromosomes form at opposing poles. Each ... a total of four daughter cells, each with an haploid set of chromosomes. Significance of meiosis ...

Cell division

... cytokinesis . A diploid cell may also undergo meiosis to produce haploid cells, usually four. haploid cells serve as gametes in multicellular organisms, fusing to form new ...

Gamete

... animals , and archegonia or antheridia in plants . Gametes are haploid cells; that is, they contain one complete set of chromosomes (the ... reduces the number of sets of chromosomes from two to one (i.e., produces haploid gametes). The diploid somatic cells of an individual will contain ...

Botany

... wheat , maize and soybean are also having their genomes sequenced, although some of these are more challenging because they have more than two haploid (n) sets of chromosomes , a condition known as polyploidy . The "Green Yeast" Chlamydomonas reinhardtii (a single-celled, green alga ) is ...

Chromosome

... one from the mother, one from the father) or polyploid [Xn] (more than two sets of chromosomes), and gametes (reproductive cells) which are haploid [n] (they have only one set of chromosomes). Gametes are produced by meiosis of a diploid germ line cell. During meiosis, the matching ...

Eukaryote

... receive one copy of each chromosome. In most eukaryotes there is also a process of sexual reproduction, typically involving an alternation between haploid generations, where only one copy of each chromosome is present, and diploid generations, where two are present, occurring through nuclear fusion ...

Fungus

... , a group of reduced parasites whose relationships to the other fungi are uncertain. Reproduction Sexual Fungal mycelia are typically haploid . When mycelia of different mating types meet, they produce two multinucleate ball-shaped cells, which form a mating bridge. The result is that ...

Hardy-Weinberg principle

... Sex linkage Where the a gene is sex-linked , the heterogametic sex (e.g. males in humans) have only one copy of the gene and are effectively haploid for that gene. So the genotype frequency at equilibrium is therefor p and q for the heterogametic sex but p^2, 2pq and q^2 for the homogametic sex. ...

Neurospora crassa

... on the spores that resemble axons . N. crassa is notable for its use as a model organism in science because it is easy to grow and has a haploid life cycle that makes genetic analysis simple since recessive traits will show up in the offspring. Neurospora was used by Edward Tatum and ...

Plant

... . They can only survive in moist environments, and remain small throughout their life-cycle. This involves an alternation between two generations: a haploid stage, called the gametophyte , and a diploid stage, called the sporophyte . The sporophyte is short-lived and remains dependent on its parent. ...

Plant

... . They can only survive in moist environments, and remain small throughout their life-cycle. This involves an alternation between two generations: a haploid stage, called the gametophyte , and a diploid stage, called the sporophyte . The sporophyte is short-lived and remains dependent on its parent. ...

Prokaryote

... have structures called ribosomes , which produce protein. Prokaryotes are usually much smaller than eukaryotic cells. Prokaryotes have a single haploid circular (only exceptionally linear, as in Borrelia burgdorferi ) chromosome , contained within a region called nucleoid , rather than in a ...

Sperm

... , and (5) flagellum (tail) A sperm cell , or spermatozoon ( pl. spermatozoa ) (in Greek : sperm = semen and zoon = alive), is the haploid cell that is the male gamete . It is carried in fluid called semen , and is capable of fertilising an egg cell to form a zygote . A zygote ...

Spermatid

... The term spermatid refers to the haploid male germ cell that results from secondary spermatocyte division. As a result of meiosis , each spermatid contains only half of the genetic ...

Zygote

... A zygote ( Greek : ζυγωτόν ) is a cell that is the result of fertilization . That is, two haploid cells—usually (but not always) a sperm cell from a male and an ovum from a female —merge into a single diploid cell called the ...
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