Question: why is dna useful in tracing evolutionary changes?
a)dna contains only elements, so it does not react easily.
b) many organisms do not contain dna.
c) certain mutations in dna happen at a constant rate.
d) dna does not change over time, making it a valuable clue.

The correct answer is option C

DNA is used in tracking the evolutionary changes as certain mutation in DNA happen at constant rate.

DNA is a stable molecule and the mutations that takes place in the DNA occurs at constant rate so it is easy to be studied for the evolutionary traces.

The DNA is used to to study the phylogenetic events that are not documented by the fossils.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).