Question

practice it!
select the correct statement(s) about complex inheritance patterns.
incomplete dominance is when the alleles mix together, like paint mixing.
more than one allele can be available for each gene.
the dominant allele is always expressed over the recessive.
codominance is when both alleles are expressed.

Explanation:

• For "Incomplete dominance is when the alleles mix together, like paint mixing": In incomplete dominance, the heterozygous phenotype is an intermediate (a mix) of the two homozygous phenotypes, so this is correct.
• For "More than one allele can be available for each gene": Genes can have multiple alleles (e.g., blood type genes with \(I^A\), \(I^B\), \(i\)), so this is correct.
• For "The dominant allele is always expressed over the recessive": In complex inheritance (e.g., incomplete dominance, codominance), dominant - recessive rules don't always hold. So this is incorrect.
• For "Codominance is when both alleles are expressed": In codominance, both alleles are fully expressed in the heterozygote (e.g., blood type AB), so this is correct.

Answer:

• Incomplete dominance is when the alleles mix together, like paint mixing.
• More than one allele can be available for each gene.
• Codominance is when both alleles are expressed.