The point at which an infant can survive a premature birth is called the age of __________

Collaborative learning is a peer-centered learning experience in which students work together in small groups to promote the learning of each group member

Indicate whether the statement is true or false

The genetic characteristics of recessive genes

a. tend to mask the characteristics of dominant genes. b. are always expressed in the phenotype. c. are usually codominant. d. tend to be masked by the characteristics of dominant genes.