B. Global climate is complex, so changes in global climate are hard to predict.
The answer is D, being breathed into the lungs.
Answer:RNA polymerase binds to a sequence of DNA called promoter found near the beginning of the gene
Explanation: each gene has it own promoter. Once bound, RNA polymerase seperates the DNA strands, providing the single-stranded bind needed for transcription
Answer:
1. Mutation
2. Epigenetics
Explanation:
1. Mutation occurs when there is a change in an organism's DNA sequence as a result of mistakes in DNA replication or as a result of environmental factors like smoking. The mutation in a single organism can be passed on to other generations hence causing a genetic variation in the population, this obeys the Darwin's law that inherited traits (genetic) are passed on to other generations
2. Epigenetics are changes in gene expression that doesn't involve changes in the DNA sequences unlike mutation. This changes can be passed on to other generations and hence cause a variation in the population. This obeys the Lamarckian evolution that acquired traits are passed on to other generations.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
