Question

When scientists compare molecular clocks between species, they

have to use the same segment of DNA. Which of these statements
would explain why that is necessary?
A. Not every segment of DNA mutates.
B. Different genes mutate at different rates.
C. Species accumulate neutral mutations at random rates.
D. All mutations cause harmful effects.
Check Answer

Answer 1

Yeah same here

Step-by-step explanation:

The reason is mutation rates differ between species and even between different regions of the genome of a single species. These different rates of nucleotide substitution are measured in substitutions (fixed mutations) per base pair per generation.

Answer 2

ITS B: DIIFERENT GENES

Step-by-step explanation: