QQuestionBiology
QuestionBiology
What are the different forms of genes for a single trait called?
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Step 1:I'll solve this problem following the specified formatting guidelines:
Step 2:: Define Alleles
Alleles are different forms of a gene that can exist at the same location (locus) on a chromosome. These alternative versions of a gene control the same trait but may produce different expressions of that trait.
Step 3:: Key Characteristics of Alleles
- Alleles occur in pairs - One allele is inherited from each parent - They can be dominant or recessive - Represented by letters (typically capital for dominant, lowercase for recessive)
Step 4:: Example
For eye color, an allele for brown eyes ($$B$$) might be dominant over an allele for blue eyes ($$b$$).
Step 5:: Types of Allele Combinations
- Homozygous: Two identical alleles ($$BB$$ or $$bb$$)
- Heterozygous: Two different alleles (Bb)
Final Answer
Alleles are the different forms of genes for a single trait, representing alternative versions of a gene that can produce variations in a specific characteristic.
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