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Found Heterozygote 9 times.

Displaying results 1 to 10.

1. Alpha1-antitrypsin
This is a protease inhibitor (Pi). Low serum levels of this antienzyme predisposes patients to early onset of emphysema and chronic liver disease. Ten percent of the adult population has the heterozygote genotype MZ in which intermediate levels of alpha1-antitrypsin is present. The incidence of liver disease in MZ is only mildly higher than the general population. (Normal ranges by genotype: normal MM: more than 250mg/deciliter, heterozygous MZ: 50 - 250 mg/dL, homogygous ZZ: less than 50 mg/dL)

2. Balanced stock
A genetic strain of any of several lab organisms (like fruit flies) which can be maintained as heterozygous individuals without requiring constant artificial selection for the heterozygotes, due to a number of lethal recessive gene s with the result that the homozygous females are sterile (unable to produce offspring) and the males with the wrong recessive alleles are dead. (Male fruit flies are not homozygous or heterozygous because they only have one allele per particular genetic loci in question).

3. Codominance
A type of inheritance in which heterozygotes fully express both alleles .

4. Complete dominance
The type of inheritance in which both heterozygotes and dominant homozygotes have the same phenotype .

5. Dominance
The property of one of a pair of alleles that suppresses the expression of the other member of the pair in heterozygotes .

6. Dominant
Refers to an allele of a gene that is always expressed in heterozygotes .

7. Heterosis (hybrid vigor)
The observation that in some circumstances, the heterozygote s in a population have higher fitness than the homozygote s; for example they grow better, are better able to survive, and/or are more fertile than the homozygotes. The effect of heterosis can also apply to hybrid s (thus "hybrid vigor").

8. Heterozygote
An organism or cell having two different allele s at corresponding loci on homologous chromosome s.

9. Incomplete dominance
A type of inheritance in which the heterozygote has a phenotype intermediate to those of the homozygous parents.

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