Answer: Mutation. The allelic variations that make evolution possible are generated by the process of mutation, but new mutations change gene frequencies very slowly, because mutation rates are low. Assume that the gene allele A1 mutates to allele A2 at a rate m per generation and that at a given time the frequency of A1 is p.
Explanation:
It consist of integral proteins and trans-membrane proteins and peripheral proteins as well
Answer:
B. Different genes are expressed due to their environment.
Explanation:
I think it's this one because it makes the most sense, but I'm still not sure sorry
Hi! I can help you out.
RNA polymerase binds to regions of DNA called promoters, which are "start" signals for transcription
d. Eras are divided into periods; periods are divided into epochs.
The geologic time is divided from the largest defined unit of time called supereon, which is composed of eons. Eons are further subdivided into eras, periods, epochs and the smallest unit of time - ages.