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Diploid in Biological Dictionary

Sporophyte

... gametophyte generation alternates with a diploid sporophyte , the generation of a plant or ... in which two distinct phases (a haploid and a diploid phase) occur in the life history of a plant, ... the gametophyte.) In the sporophyte phase, a diploid plant ... The sporophyte refers to ...

Meiosis

... meiosis is the process that transforms one diploid cell into four haploid cells in ... process. In meiosis I, chromosomes in a diploid cell resegregate, producing four haploid ... meiosis and an explanation of haploid versus diploid cells. A detailed look at beginning of meiosis ...

Haploid gametophyte

... of plants, fungi and protists. A multicellular diploid phase alternates with a multicellular haploid ... alternation between haploid gametophyte and diploid sporophyte phases, known ... Haploid ... haploid ... of generations involving a diploid sporophyte and a haploid gametophyte . ... ...

Haploid Cell

... cells (sperm and egg) are haploid . ... a diploid human cell contains 46 chromosomes: 2 ... of a ... From the On-Line ... Haploid and diploid are terms referring to the number of sets of ... ...... each has ... The sizes of haploid and diploid cells vary with the phase of growth and from ...

Haploid

... life cycle -- Occurs when a multicellular diploid phase, or ... (Redirected from Haploid ... haploid (n) only has one set of chromosomes. A diploid cell (2n) has two sets of chromosomes. ... meiosis is the process that transforms one diploid cell into four haploid cells in ...

Diploid nuclei

... from medicine, ... A nucleus containing the diploid or normal double complement of chromosomes for ... The dictionary term diploid nucleus was found in Taber's Medical ... scientists to ... include the production of diploid nuclei in a heterokaryotic, haploid ...

Diploid

... the somatic cells that compose the body are diploid , but sex cells (sperm and egg) are haploid. In ... tulips and lilies are commonly found as both diploid and as triploid. Daylilies (Hemerocallis) cultivars are available as either diploid or tetraploid. ... ...

Diploid Cell

... yet the cell may still be classified as diploid (although with aneuploidy) ... Human diploid cells have 46 chromosomes and human ... a simple single celled eukaryote with both a diploid and haploid mode of existence. The mating of ...

Amictic egg

... females in the ... Amictic females produce diploid eggs that develop by ameiotic ... Amictic : diploid eggs formed by mitosis, which develop directly ... invertebrate zoology ) In rotifers, producing diploid eggs that are ... to the egg produced by the ...

Zygote

... especially a fertilized ovum before cleavage ... results in the diploid zygote , with a full set of ... Zygote - Definition of Zygote at ...... zygotes , zygote ... zygote (zgt) ... zygote - (genetics) the diploid cell resulting from the union of a haploid ... ... zygote – Our ...

Spermatogonia

... type of stem ... Type B spermatogonia undergo mitosis to produce diploid intermediate cells ... Information about spermatogonia in the free ... potentially are the male ... ... seminiferous tubules consist of diploid spermatogonia , stem cells that are the ... spermatogonia to ...

Sex cells

... combine at fertilization to form one-of-a-kind offspring. Humans are diploid organisms with two sets of homologous chromosomes, but we also contain ... of their offspring via sex cells or gametes. ... ... sort of diploid husk, morbidly discarded by those haploid sex cells that manage ... ...

Oogenesis

... oogenesis , the primordial germ cell produces an oogonium with a diploid nucleus. ... mRNA localization and translational control during ... ... Oogenesis in humans begins in embryonic and fetal development, when diploid germ ... posted to reproduction ovogenesis oogenesis oocyte ...

Megaspore

... articles & newspaper ... A megaspore mother cell is a diploid cell in which meiosis will occur, resulting ... The one of these ... & Innovative Education Solutions ... Within the ovule, one diploid megaspore mother cell divides by meiosis to produce four haploid ....

Gametogenesis

... Gametogenesis is a process by which diploid or haploid precursor cells undergo cell division and ... Biology, ... Gametogenesis Facts. Gametogenesis is a process by which diploid or haploid ... gametogenesis - Definition of gametogenesis from ...

Gametophyte

... contains a single complete set of ... between haploid gametophyte and diploid sporophyte ... ... exclusively ferns) in gametophyte stage in the ... complete set of ... The alternation between haploid gametophyte and diploid sporophyte phases, known ... The haploid male gametophyte ...

Sperm cells

... ... usually consisting of a round or cylindrical nucleated cell , a short ... Sperm cells contribute half of the genetic information to the diploid offspring. ... However, sperm cells make up only about 3% of the volume of semen, a fluid ... Mature sperm cells are about 0.05 ...

Sister Chromatids

... connected by a centromere. Compare sister chromatids to homologous chromosomes, which are the two different copies of the same chromosome that diploid organisms (like humans) inherit, one from each parent. In ... Cohesin is the protein complex responsible for binding the sister ...

Sister chromatid

... connected by a centromere. Compare sister chromatids to homologous chromosomes, which are the two different copies of the same chromosome that diploid organisms (like humans) inherit, one from each parent. In ... A chromatid is one among the two identical copies of DNA making up a ...

Sex chromosome

... or problems that occur during meiosis. Autosomes Vs Sex Chromosomes ... chromosomes that are not involved in sex determination. Human diploid cells have 22 pairs of autosomes and 1 pair of sex ... The sex chromosomes of human beings and other mammals are designated by ...

Polyploid

... have arisen through hybridization between two ... That polyploid derivative species would have the combined genetic markers of ... ... diploid state (which may be polyploid ), with one of the stages ... Polyploid plants are probably most often formed from the pairing of meiotically ... ...

Polar nuclei

... in the Columbia ... and the other fuses with the polar nuclei to form endosperm (food-storage tissue) ... central nuclei fuse to form a diploid polar nucleus that ... chalazal antipodal cells, two polar nuclei in a central cell, and a three-celled ... Double fertilization The ...

Ovum

... ... ovum - 19 definitions - (n) 1. a pluralization of ovum . ... As soon as the nuclie of the ovum and sperm fuse, they create a new diploid ... Gray, Henry. 1918. Anatomy of the Human Body. I. Embryology. 2. The Ovum ... The ovum is enclosed within a thick, transparent envelope, ...

Microgametophyte

... the microspore, that produces the male gametes of a ... The development of the microgametophyte (male gametophyte) in flowering plants ... A diploid microsporocyte, or microspore mother cell, divides to give rise to ... Garden Dictionany for thousands of garden words. Why not learn about a ...

Megasporocyte

... , showing perpendicular orientation of chalazal ... Know how the embryo sac develops from the megasporocyte . ... sporangium is a diploid cell, the megasporocyte . The megasporocyte divides by meiosis to produce 4 ... Each ovule contains a megasporangium which produces one ...

Megasporangium

... megasporangium . apex of megasporangium modified to receive microspores ... L. The seed coat and megasporangium develop from tissues of the diploid sporophyte parent. ... M. Within the megasporangium is the haploid female gametophytic ... The megasporangium contains a megasporocyte ...

Megabase cloning

... Microbe ... Molecular cloning . Molecular genetics. Monoclonal antibodies ... Clone . Cloning . Coat protein (capsid). Codon. Coenzyme ... diploid cell. Directional cloning . DNA (Deoxyribonucleic aci. DNA diagnosis. DNA fingerprint ... Megabase cloning . Susan A.Hagedorn The cloning of ...

Mating type

... to others, (the "female" signals the " ... The yeast Saccharomyces cerevisiae is a simple single celled eukaryote with both a diploid and haploid mode of existence. The mating of yeast only occurs between haploids, which can be either the a or α (alpha) mating type ... ...

Homozygote

... trait or condition, an individual who has inherited ... An organism that has two identical alleles of a gene. ... Homozygote cells are diploid or polyploid and have the same alleles at a locus ... When an organism is referred to as being homozygous for a specific gene, it ... ... ...

Heterozygote

... of encyclopedia entries, essays, summaries, research ... Asymmetric Model of Heterozygote Advantage at Major ... Heterozygote cells are diploid or polyploid and have different alleles at a ... human is referred to as a heterozygote , or being heterozygous for a specific ... ...

Heteroduplex Dna

... a popular technique to screen for sequence variants in ... Heteroduplex analysis is a popular technique to screen for sequence variants in diploid DNA . ... DNA mixtures are amplified by PCR for heteroduplex detection, ... ... a MutS dimer and a DNA heteroduplex are converted ... ...

Hepatocytes

... we performed ... PLoS Genetics is an open-access ... First, cytogenetic analysis of fusion-derived hepatocytes reveals a population of diploid cells. ... ...

Hemizygous

... ... All of the gene on the single X chromosome in the male are in the hemizygous state. ... hemizygous ( ¦hemē¦zīgəs ) ( genetics ) In diploid organisms, the presence of single copy of a gene; it may be a result of deletion or Zygosity This article relies largely or entirely upon a ...

Genomic DNA

... In classical genetics, the genome of a diploid organism including eukarya refers to a full set of chromosomes or genes in a gamete; thereby, a regular somatic cell contains two full sets of ...

Genome

... In classical genetics, the genome of a diploid organism including eukarya refers to a full set of chromosomes or genes in a gamete; thereby, a regular somatic cell contains two full sets of ...

Gene duplication

... of an entire chromosome. The second copy of ... gene duplication ( ′jēn düplə′kāshən ) ( genetics ) The reduction in fitness of a diploid population due to new mutant genes and those already in the Evolution claims gene duplication as a primary method of ... Does gene ...

Gametes

... In species that produce two morphologically distinct types of gametes , and in which each ... Gametogenesis is a process by which diploid or haploid precursor cells undergo cell division and differentiation to form mature haploid gametes . Depending on the biological life ...

Gamete

... ;ε ... Retrieved from "http://psychology.wikia .com/wiki/ Gamete " ... In contrast to a gamete , the diploid somatic cells of an individual contain one ... A gamete's chromosomes are not exact duplicates of either of the sets of ... In most ...
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