heterozygotean
organism formed by union of
gametes that are unlike in their genetic content; contrast to
homozygoteSource: Noland, George B. 1983. General
Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Full article >>>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.
Full article >>>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 ...
Full article >>>Heterozygote cells are
diploid or
polyploid and have different
alleles at a
locus (position) on
homologous chromosomes.
Full article >>>Heterozygote See:
heterozygosityHighly
conserved sequence DNA sequence that is very similar across several different types of
organisms.
See also:
gene,
mutation ...
Full article >>>HeterozygoteThe 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.
Full article >>>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 ...
Full article >>>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 ...
Full article >>>Heterozygote A
diploid or partially
diploid organism with different
alleles of one or more particular genes.
Full article >>>Heterozygote. With respect to a given genetic
locus, a
diploid individual carrying two different
alleles ...
Full article >>>Heterozygote advantage (or over
dominant selection) is an example in which an
allele selected against in the
homozygous state is retained because of the superiority of
heterozygotes.
Full article >>>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.
Full article >>>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) ...
Full article >>>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.
Full article >>>See
Heterozygote,
Phenotype.
Initiation codon. The m
RNA sequence AUG, coding for methionine, which initiates
translation of m
RNA. Inositol
lipid.
Full article >>>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.
Full article >>>Heterozygote sickle
cell carriers are much more resistant to malaria than those with just normal
hemoglobin.
Full article >>>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.
Full article >>>4 The
heterozygotes are just as successful at reproducing themselves as the
homozygous dominants, but the
homozygous recessives are only 80% as successful.
Full article >>>The situation in which a
heterozygote shows the phenotypic effects of both
alleles fully & equally, (eg blood group
antigens).
Full article >>>The small fourth
chromosome of
Drosophila melanogaster remains achiasmate and is normally segregated.
In a (1,4)
translocation heterozygote, ...
Full article >>>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.
Full article >>>Mendel was also the first to hypothesize
independent assortment, the distinction between
dominant and
recessive traits, the distinction between a
heterozygote and
homozygote, ...
Full article >>>'"/>