DNA replication occurs before a cell divides. DNA helicase begins the process. After DNA helicase is finished, a second enzyme named DNA
adds a small piece of RNA primer to the DNA molecule to mark it,
b
primase
ligase
polymerase
lactase
C

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes