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Dictionary » H » Heterozygous

Heterozygous

Definition

adjective

(1) Of, or pertaining to an individual (or a condition in a cell or an organism) containing two different alleles for a particular trait.

(2) Having dissimilar alleles that code for the same gene or trait.


Supplement

Example: a zygote having one dominant allele and one recessive allele, i.e. Aa, for a particular trait.


Word origin: G. héteros the other of two, other, different + zygous, which pertains to a zygote.

Related forms: heterozygosity (noun).
Related phrases: heterozygous recessive, heterozygous dominant.

Compare: homozygous.
See also: allele.


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Results from our forum


Phenotypes of Fruit Flies

Hint: F1 is heterozygous for Genetic Hypothesis 1; heterozygous/hemizygous for 2; and identical to F0 female line in 3. Do the crosses and see what you come up with. Good luck.

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by Cat
Fri Oct 07, 2011 1:27 am
 
Forum: Genetics
Topic: Phenotypes of Fruit Flies
Replies: 1
Views: 54

Re:

... (severely debilitating mutation), it may prevail as a heterozygote (no obvious harm or benefit), or it will increase in numbers (beneficial as heterozygous or as homozygous). In certain environments even a "bad" mutation can do well, a famous example of this would be the association ...

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by Crucible
Thu Oct 06, 2011 3:20 pm
 
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 7
Views: 98

The Implausible Engines of Evolution

... (severely debilitating mutation), it may prevail as a heterozygote (no obvious harm or benefit), or it will increase in numbers (beneficial as heterozygous or as homozygous). In certain environments even a "bad" mutation can do well, a famous example of this would be the association ...

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by biohazard
Thu Oct 06, 2011 7:36 am
 
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 7
Views: 98

Mitochondrial disease

... may be able to pass on the mitochondrial disease to his children if the mother also possesses the mitochondrial disease”, - correct if mother is heterozygous for it. if we consider these diseases like Cat, then the mother would have to have at least one defect in the gene - heterozygous as you ...

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by merv
Sun Oct 02, 2011 10:33 pm
 
Forum: Genetics
Topic: Mitochondrial disease
Replies: 2
Views: 94

Re: Mitochondrial disease

... may be able to pass on the mitochondrial disease to his children if the mother also possesses the mitochondrial disease”, - correct if mother is heterozygous for it. “however the father should not be able to pass on a mitochondrial disease to his children, therefore this theory is irrational” ...

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by Cat
Wed Sep 28, 2011 9:18 pm
 
Forum: Genetics
Topic: Mitochondrial disease
Replies: 2
Views: 94
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