Heterozygote

heterozygote
an organism formed by union of gametes that are unlike in their genetic content; contrast to homozygote
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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When an organism is referred to as a heterozygote or as being heterozygous for a specific gene, it means that the organism carries a different version of that gene on each of the two corresponding chromosomes.
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A selection model in which heterozygotes have the highest fitness.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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Heterozygote cells are diploid or polyploid and have different alleles at a locus (position) on homologous chromosomes.
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Heterozygote See: heterozygosity
Highly conserved sequence DNA sequence that is very similar across several different types of organisms.
See also: gene, mutation ...
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Heterozygote
The term coined by Bateson and Saunders (1902) for a zygote, or a diploid individual derived from it, which carries both members (Gk. heteros, different) of a pair of alleles.
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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
A hybrid is a heterozygote. Example: Aa ...
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heterozygote advantage
A mechanism that preserves variation in eukaryotic gene pools by conferring greater reproductive success on heterozygotes over individuals homozygous for any one of the associated alleles.
heterozygous ...
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Heterozygote
A diploid or partially diploid organism with different alleles of one or more particular genes.
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Heterozygote. With respect to a given genetic locus, a diploid individual carrying two different alleles ...
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Heterozygote advantage (or overdominant selection) is an example in which an allele selected against in the homozygous state is retained because of the superiority of heterozygotes.
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heterozygote An organism in which homologous chromosomes contain different allelic forms (often dominant and recessive) of a locus; derived from a zygote formed by union of gametes of dissimilar allelic constitution.
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Heterozygote an individual with a pair of two different alleles
(hetero = other different; zygo = yoke)
Hibernation a long-term (seasonal) decrease in body functions
(hibern = winter) ...
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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.
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See Heterozygote, Phenotype. Initiation codon. The mRNA sequence AUG, coding for methionine, which initiates translation of mRNA. Inositol lipid.
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When heterozygotes are more fit than either of the homozygotes, however, selection causes genetic variation to be maintained. [heterozygote: an organism that has two different alleles at a locus.
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Heterozygote sickle cell carriers are much more resistant to malaria than those with just normal hemoglobin.
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Codominant alleles occur when rather than expressing an intermediate phenotype, the heterozygotes express both homozygous phenotypes. An example is in human ABO blood types, the heterozygote AB type manufactures antibodies to both A and B types.
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4 The heterozygotes are just as successful at reproducing themselves as the homozygous dominants, but the homozygous recessives are only 80% as successful.
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The situation in which a heterozygote shows the phenotypic effects of both alleles fully & equally, (eg blood group antigens).
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The small fourth chromosome of Drosophila melanogaster remains achiasmate and is normally segregated.
In a (1,4) translocation heterozygote, ...
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Incomplete dominance. A condition where a heterozygous off- spring has a phenotype that is distinctly different from, and intermediate to, the parental phenotypes. See Heterozygote, Phenotype.
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Mendel was also the first to hypothesize independent assortment, the distinction between dominant and recessive traits, the distinction between a heterozygote and homozygote, ...
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