Question

1 multiple choice 20 points in codominance, how are alleles expressed? the alleles trade off dominance throughout the organisms lifetime. both alleles are fully expressed. alleles blend together. one allele masks the other.

Explanation:

To solve this, we analyze each option based on the concept of codominance:

• "The alleles trade off dominance throughout the organism's lifetime" is incorrect. Codominance does not involve trading dominance over time.
• "Both alleles are fully expressed" is correct. In codominance, both alleles in a heterozygous individual are fully expressed, like in blood type AB where both A and B alleles are expressed.
• "Alleles blend together" describes incomplete dominance, not codominance.
• "One allele masks the other" describes complete dominance, not codominance.

Answer:

B. Both alleles are fully expressed.