Question:What does codominance mean in genetics? 1.Both alleles are dominant and are expressed.
2.Both alleles are recessive and are not expressed.
3.The alleles are neither dominant nor recessive.
4.Each allele is both dominant and recessive.

Option 1

that can give nice mixtures of colors in flowers, like alleles for white and red are expressed, and mixed to pink seen by the human eye

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.