When two lineages split from a common ancestor, each accumulates different mutations over long periods of time. The number of mutations is proportional to
the length of time that the two groups have been genetically separate.
A scientist studies corresponding genes in two species. Which data would be
most useful for determining the time when the split from the common ancestor
occurred?
a. mutation rate and the number of mutations in each sequence
b. mutation rate and the number of nucleotides in each sequence
c. mutation rate and the number of nucleotides that differ between the two
sequences
d. the number of repeated nucleotides and their specific locations in the two
sequences

a, i am pretty sure.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

most community's take hundreds of years to become stable

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics