What do geneticists call alleles that are both expressed in the phenotype when they are together?
a.) hybrids
b.) codominance
c.) heterozygous
d.) incomplete dominance

Explain the physiological changes that occur when the hypothalamus stimulates the sympathetic nervous system. you can make a flowchart or a simple step process. be sure to include all chemicals/hormones secreted, glands involved and the functions of each chemical/hormone.