Answer: 1. B-D-A-C.
Explanation: If a genetic error occurs during chromosome replication, it will lead to a series of events ranging from:
1) Production of a DNA strand with an altered base sequence.
2) Production of an mRNA strand with an altered base sequence during transcription. This is because mRNA is synthesized by copying the genetic message coded in the DNA.
3). Synthesis of a protein with an altered amino acid sequence during translation, and this eventually leads to
4). The expression of a new inheritable trait in the organism.
The right option is; orbital period
T stands for orbital period.
Orbital period is the time a certain astronomical object such as planets takes to complete one orbit (360° revolution) around another object such as sun or stars. Orbital period is expressed in different units of time, usually in years, days or hours.