Because it is meant to be performed multiple times for accurate results.
Answers;
Initiation of transcription;
Proteins called transcription factors are involved in the initiation stage of transcription
Explanation;
Transcription factors are proteins that help turn specific genes "on" or "off" by binding to nearby DNA.
Transcription factors that are activators boost a gene's transcription while the repressors decrease transcription.
These factors allow cells to perform logic operations and combine different sources of information to "decide" whether to express a gene
D). Carcinogens are chemical factors in an organism's environment that can cause spontaneous mutation.
Answer:
Roses and lilies are seed-producing, flowering plants, hence, these plants are angiosperms. Presence of flowers is the major characteristics of angiosperms, in which male and female reproductive organs are present.