Question

The red-RR is crossed with white-rr. All the offspring are pink-Rr. This indicates the R gene is_________.

• A. recessive
• B. hybrid
• C. incomplete dominant
• D. none of these

Answer 1

The correct option is C

incomplete dominant

Incomplete dominance in genes occurs when the one of the alleles in a heterozygous pair is unable to fully express its features. This can often leave the pair indeterminate, with elements of each allele being expressed in a subdued status. Incomplete dominance happens when each genotype has its own individual phenotype, which causes neither allele to truly dominate the other, either because neither are dominant or because the dominant allele fails to dominate the recessive allele fully.