Multiple Choice
If the allele encoding polydactyly (six fingers) is dominant, why do most people have five fingers?
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12. Meiosis
Genes & Alleles
Multiple Choice
The traits of what type of gene are expressed whenever they are present?
A
Dominant gene
B
Incomplete dominant gene
C
Codominant gene
D
Recessive gene
Verified step by step guidance1
Understand the concept of gene expression: Gene expression refers to the process by which information from a gene is used to synthesize a functional gene product, often a protein, which can affect traits.
Learn about dominant genes: Dominant genes are those whose traits are expressed in the phenotype whenever they are present, even if only one copy is present in the genotype.
Explore incomplete dominance: Incomplete dominance occurs when the phenotype is a blend of both alleles, meaning neither allele is completely dominant over the other.
Understand codominance: Codominance is a situation where both alleles in a gene pair are fully expressed, resulting in a phenotype that shows both traits equally.
Recognize recessive genes: Recessive genes require two copies (homozygous) to be expressed in the phenotype, as their traits are masked by dominant alleles when present.
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