The human genome is estimated to contain about _______________ genes

The ________ is the observable trait or disease in an individual, influenced by genotype and environment

a. phenotype b. allele c. X chromosome d. Y chromosome

Accidental injuries are most likely to occur among low-income children. Some contributing factors are

a. dangerous housing and neighborhoods. b. parents engaging in more high risk activities. c. children being enrolled in high risk sports, such as football. d. children joining gangs at a very young age.