Heterozygous meaning

Heterozygous refers to having different alleles for a specific gene, with one allele being dominant and the other recessive.


Heterozygous definitions

Word backwards suogyzoreteh
Part of speech Adjective
Syllabic division het-er-o-zy-gous
Plural The plural form of the word "heterozygous" is "heterozygotes."
Total letters 12
Vogais (3) e,o,u
Consonants (7) h,t,r,z,y,g,s

Heterozygous refers to an individual who has two different alleles for a particular gene. This means that one allele is dominant and the other is recessive. In genetics, alleles are different forms of a gene that can lead to different traits or characteristics.

Genetic Inheritance

When a person is heterozygous for a specific gene, they will exhibit the dominant trait associated with the dominant allele. The recessive allele, although present in the individual's genetic makeup, is not expressed in their physical characteristics. However, the recessive allele can still be passed on to the individual's offspring.

Examples in Genetics

A classic example of heterozygous inheritance is in eye color. For instance, if an individual inherits one allele for brown eyes (dominant) and one allele for blue eyes (recessive), their eye color will be brown. However, they still carry the possibility of passing on the blue eye allele to their children.

Significance in Genetic Counseling

Understanding whether an individual is heterozygous or homozygous (having two identical alleles) for a particular gene is crucial in genetic counseling. It can help predict the likelihood of certain genetic disorders or traits being passed on to future generations.

In conclusion, being heterozygous for a specific gene means having two different alleles for that gene. This genetic makeup can have significant implications for an individual's traits and the potential for passing on certain genes to their offspring.


Heterozygous Examples

  1. The offspring of two heterozygous parents may inherit different genetic traits.
  2. A heterozygous individual carries two different alleles for a particular gene.
  3. In genetics, a Punnett square can be used to predict the offspring of heterozygous parents.
  4. Heterozygous traits can sometimes be masked by dominant alleles in an organism.
  5. Being heterozygous for a certain gene can provide a survival advantage in changing environments.
  6. Individuals who are heterozygous for a recessive disorder are typically unaffected by the disease.
  7. Heterozygous plants may exhibit a blend of characteristics from both of their parent plants.
  8. Selective breeding can be used to enhance heterozygosity in livestock populations.
  9. Heterozygous individuals may have increased genetic diversity compared to homozygous individuals.
  10. The evolution of a species can be influenced by the presence of heterozygous individuals in the population.


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  • Updated 24/04/2024 - 12:50:36