zygote
fertilized egg cell after fusion with male gamete, cell produced by the uniting of male and female sex cells
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Zygote
From Wikipedia, the free encyclopedia
Jump to: navigation, search ...
Zygotene
[Gr. zygotos - yoked together; Gr. tainia - ribbon]. The second stage in prophase 1 of meiosis, characterized by the synapsis, or pairing, of homologous chromosomes to form a bivalent.
TAG: Zygote
(Date:3/28/2011)... of "exploratory" butterflies that colonized new habitats differ genetically ... James Marden, a professor of biology at Penn State ... both Penn State and the University of Helsinki, has ...
ZYGOTES
We already talked a little about mold. That is only one example of the Zygote Fungi. These have hyphae-like mushrooms but they reproduce in a different way.
zygote A fertilized egg. A diploid cell resulting from fertilization of an egg by a sperm cell.
Last modified:
The URL of this page is: ...
zygote
(zi-goat) [Gk. zygon,yolk, pair]
The diploid product of the union of haploid gametes in conception; a fertilized egg.
zygote -- The product of gamete fusion. In organisms with a haploid life cycle, the zygote immediately undergoes meiosis, but in organisms with a multicellular diploid stage, ...
Zygote (ZYE-gote) A cell resulting from the fusion of an egg and a sperm.
Cell Biology GlossaryCell Biology Glossary ...
zygote - the diploid cell created by the union of two haploid gametes; a fertilized egg.
Zygote The diploid cell formed by the fusion of two haploid gametes. In humans. a fertilised egg.
Zygote: A fertilized egg. Or the diploid cell that results from the joining of two haploid gametes (sperm and egg) during sexual reproduction, that will cleave to form an embryo. See also fertilization, gamete.
zygote
The diploid product of the union of haploid gametes in conception; a fertilized egg.
Covered in BIOL1020 Lab 6 Mitosis & Meiosis
Return to Biology HomeUniversity of Manitoba Home ...
2. Zygotene
Synapsis. The synaptonemal complex begins to form.
DNA strands of nonsister chromatids begin the process of recombination. How they are able to do so across the synaptonemal complex, which is over 100 nm thick, is unknown.
Homozygote. An organism whose genotype is characterized by two identical alleles of a gene. See Allele, Genotype.
Host. An organism that contains another organism.
Homozygote an individual with a pair of two of the same allele
(homo = same‚ like‚ alike; zygo = yoke) ...
Homozygote An organism that has two identical alleles of a gene.
See also: heterozygote
Homozygous See: homozygote
Human artificial chromosome (HAC) A vector used to hold large DNA fragments.
See also: chromosome, DNA ...
Heterozygote (also called hybrid) refers to an individual that has two different forms of the gene. Example: Aa
Homozygote refers to an individual that has two identical genes. Example: AA or aa ...
Heterozygote
A diploid or partially diploid organism with different alleles of one or more particular genes.
Zygotene
The term proposed by Gregoire (1907) to describe the nuclei at a particular stage of prophase 1 of meiosis when the homologous chromosomes are associating side by side. (Gk. zygon, yoke; taenia, ribbon.)
Related Terms:
Nucleus ...
Zygote
Mostly diploid cell formed by union of twogametes or reproductive cells. Ovum (female gamete) fertilized by a sperm (male gamete).
Related Terms:
Gamete ...
zygote Diploid cell produced by the fusion of an egg and sperm; fertilized egg cell.
zygotic meiosis. Meiosis that takes place within the first few divisions after zygote formation; thus all stages in the life cycle other than the zygote are haploid.
Zygote A Developmental Biology Site
The Visible Embryo
Embryo Development Overview University of Pennsylvania Medical School.
Animated Embryogenesis Yale University, animated GIF images of Drosophila.
The Male Reproductive System Penn State...
Homozygote. With respect to a given genetic locus, a diploid individual carrying two identical alleles
Hydrographic. Referring to the arrangement and movement of bodies of water, such as currents and water masses ...
The human zygote is a totipotent cell. It basically can give rise to all the adult tissues, all the fetal tissues, and so forth. It seems that as the number of cells increases, the developmental potential becomes further and further restricted.
Double heterozygote: An individual who is heterozygous at two loci under investigation.
Homozygote An individual with both identical alleles (versions of a single gene) at one locus (position).
Dominant -- alleles that determine the phenotype displayed in a heterozygote with another (recessive) allele. Down syndrome -- a type of mental deficiency due to trisomy (three copies) of autosome 21, a translocation of 21 or mosaicism.
co-dominant alleles Two different alleles at a locus are responsible for different phenotypes, and both alleles affect the phenotype of the heterozygote.
The heterozygote carrier is said to have sickle cell trait. They are usually symptom free. The frequency of carriers among African Americans is 1/10 to 1/12. This relatively high frequency is due to a phenomenon known as heterozygote selection.
a structure which the females of certain animal species lay as a means of reproduction, it contains a fertilized zygote and nutrition in the form of yolk for the developing offspring, sometimes contains other substances (e.g.
In a reciprocal translocation heterozygote during meiosis the segregation of a translocated and a normal chromosome together, giving unbalanced gametes with duplications and deficiencies leading to non-viable zygotes.
One aspect of genetic drift is the random nature of transmitting alleles from one generation to the next given that only a fraction of all possible zygotes become mature adults.
The situation in which a heterozygote shows the phenotypic effects of both alleles fully & equally, (eg blood group antigens).
Was this definition helpful?
Would you have liked more information?
- The cross of a heterozygote with one of its parents
- A mutation that reverts the mutual gene to the wild type form; also called reverse mutation.
Bacteriophage ...
Reproduction occurs in humans with the fusion of two haploid cells (gametes) that create a zygote.
incompletely dominant An allele combination that produces a phenotype in the heterozygous state that is distinct from the dominant homozygote and the recessive homozygote phenotypes. Also known as semi-dominant.
Gamete (1N): NUCLEAR ENVELOPES form and chromosomes disperse as CHROMATIN. Meiosis has produced 4 DAUGHTER CELLS, each with 1N chromosomes and 1N DNA. Later, in fertilization, male and female 1N gametes will fuse to form a 2N ZYGOTE.
In instances of sexual reproduction, the cellular process of meiosis is first necessary so that haploid daughter cells, or gametes, can be produced. Two haploid cells then fuse to form a diploid zygote, ...
transition from a diploid cell to a haploid cell to allow normal reproduction to occur, so that when these two haploid cells come together with a single set of genetic information--single chromosomes--they can come together into a so-called zygote ...
Sexual - reproduction involving the union of female and male gametes to form a zygote
Spontaneous generation - abiogenesis, the creation of life from nonliving material ...
 See also: Cells, Organ, Cell, Chromosome, DNA
|
