It is possible that a trait is inherited but may not be expressed ".gi...
Yes it is possible
This is because during sexual reproduction each DNA pieces came from male as well as female thus we have two copies of each chromosome. And germ cell can take maternal or paternal origin thus when the two germ cell combine they will form the normal no.of chromosomes in their progeny. so this is because some trait is not expressed that is inherited
It is possible that a trait is inherited but may not be expressed ".gi...
Inheritable Traits and Their Expression
It is indeed possible for a trait to be inherited without being expressed in an organism. This phenomenon can be understood through the concepts of dominant and recessive alleles, as well as environmental influences.
Example: Cystic Fibrosis
- Genetic Background: Cystic fibrosis (CF) is a genetic disorder caused by mutations in the CFTR gene. The condition is inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to express the disease.
- Carrier Status: Individuals who inherit one normal allele and one mutated allele are considered carriers. They possess the trait genetically, but they do not exhibit symptoms of the disease because the normal allele is dominant over the mutated one.
Key Points of Expression
- Phenotype vs. Genotype: The genotype refers to the genetic makeup (like having one mutated CFTR gene), while the phenotype is the observable characteristics (like not having cystic fibrosis). Carriers have the genotype that could result in the trait but do not express it.
- Environmental Factors: Even if a trait is genetically predisposed, external factors can influence whether it is expressed. For example, exposure to certain environmental conditions might trigger or suppress the manifestation of a trait.
Conclusion
In summary, traits can indeed be inherited without being expressed due to the dominance of certain alleles and the influence of environmental factors. Understanding this concept is crucial in fields such as genetics, medicine, and evolutionary biology.
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