Question

State difference between dominant and recessive allele.

Answer 1

Hint: Characters, such as skin, hair, or eye color, are decided by genes. Each gene consists of two alleles, from the mother, and the father. These alleles can moreover be recessive or dominant.

Complete answer:
Traits are generally expressed when both the alleles are dominant. If some traits are missing or not expressed, but found in the parent, then the allele is said to be recessive.

> Dominant Trait:
Dominant traits are often expressed when the connected allele is dominant, even if just one copy exists
Examples in Humans:
- Hairline is V-shaped
- Almond-shaped eyes
- Right-handed
- Detached earlobes
- Dark hair
- Brown eyes

> Recessive Trait:
Recessive characters are expressed only if both the connected alleles are recessive. If one of the alleles is dominant, then the allied characteristic is less expected to noticeable
Examples in Humans:
- Hairline is Straight
- Round eyes
- Left-handed
- Attached earlobes
- Non-dark hair, red hair
- Blue eyes

Additional information:
The vital point to understand is that there is no widespread mechanism by which dominant and recessive alleles act. Dominant alleles do not actually “dominate” or “repress” recessive alleles. No matter an allele is dominant or recessive, it depends on the particulars of the proteins they code for.

Note: Dominant and recessive traits exist when a trait has two unlike forms at the gene level. The trait that first appears or is expressed in the organism is called the dominant trait. The trait that is located at the gene level but is masked and does not express itself in the organism is called the recessive trait.