One of the cons to running as an aerobic activity is that it may
a. be too repetitive and boring for some individuals.
b. require a learning curve for beginners.
c. cause back strain if not performed correctly.
d. lead to frequent, chronic injuries to muscles and joints.

Marcus's genotype for eye color is bb. olivia has brown eyes, but she is heterozygous for the trait. what percentage of the children have blue eyes? if violet has green eyes and jonas has brown eyes, what is claudia's genotype? how many people in the family have blue eyes?