Question

question 10 of 20 : select the best answer for the question. 10. an organism is heterozygous for a gene that follows mendel’s law of dominance. which allele will be expressed as its phenotype? a. neither allele will be expressed. b. the recessive allele will be expressed. c. the dominant allele will be expressed. d. both alleles will be expressed. mark for review (will be highlighted on the review page)

Explanation:

Mendel's law of dominance states that in a heterozygous organism (having two different alleles for a gene), the dominant allele masks the effect of the recessive allele. So, the dominant allele is expressed in the phenotype. Option A is wrong as one allele is expressed. Option B is wrong because recessive is masked. Option D is wrong as only the dominant is expressed (except in codominance, but the question follows Mendel's dominance).

Answer:

C. The dominant allele will be expressed.