Question

Mutations leading to changes that can be inherited by the next generation have to be introduced into at the _______ level.

Question 10 options:

	1) protein
	2) rRNA
	3) DNA
	4) tRNA
	5) mRNA

Answer 1

The flow of genetic information is described by Central Dogma: DNA encodes RNA and RNA encodes protein. So, the genetic infomation is stored in DNA and during replication DNA is segregated to each offsprings.

In the above option protein is product of mRNA translation which is transcribed from DNA. rRNA( ribosomal RNA) is componant of ribosome that function for translation of mRNA to protein and does not encode any genetic information. tRNA (transfer RNA) is RNA that transfer amino acid to ribosome for each condon. mRNA (messenger RNA) carries information from DNA by the process of trancription.

For a mutation leading to changes that can be inherited by the next generation have to be introduced into at the DNA level.

So, the answer is 3) DNA