"both have no direct relationship but a free efficient expression binds them" what are they?

Answer

DNA and RNA molecules

Explanation:

As the question indicates that they do not have a direct relationship with each other but there is an indirect process that links them. If we talk about molecular biology, DNA and RNA are two important molecules which form the basis of our every structure or function.  It is important for the timely activity of these two molecules so that every organism performs their activities timely.

Free efficient expression

if we say there is a free expression system that binds them it refers to the process of transcription and translation during which DNA is converted to RNA and RNA sequence is converted into a sequence of proteins. The synthesis of protein is the final stage where you can say that DNA and RNA are processed to form a final product that is protein.

Hope it help!

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.