LINE-1, a type of retrotransposon, is actively transcribed in the earliest stages of development, marking its presence as soon as the zygote forms.

TTC “The completion of ATC on Line 1 also means that trains can use electricity more efficiently, leading to lower operating costs for the TTC,” the agency said. “In addition, it will allow for more ...

WATCH: Expect delays and slower subway trains, TTC officials told Line 1 commuters Wednesday, after crew members discovered a damaged signal cable. The issue has caused forced trains to travel at ...