Question

what is a molecular clock

Answer 1

@apoorvk

Answer 2

anyways @heena can u help

Answer 3

is there options?

Answer 4

no i jst need a quick def

Answer 5

anything?

Answer 6

maybe this will help :
Not every molecule or gene can be used as a molecular clock. To serve as an effective molecular clock, a molecule must meet two requirements:

1. It must be present in all of the organisms being studied
If we are going to use a molecule to compare two species, that molecule needs to be found in both species!

2. It must serve an important function within the organism
If the molecule or DNA segment serves an important role within the organism, its functional regions are more likely to be conserved from generation to generation. This means that the non-functioning regions will also remain intact, allowing scientists to compare how they have changed over time.

Examples of molecules that are being used as molecular clocks are:

■Ribosomal RNA (rRNA), which plays a critical role in protein synthesis
■Cytochrome C, a protein involved in cellular respiration
■Mitochondrial DNA, which controls the functions and replication of mitochondria

Answer 7

thx

Answer 8

did that help?

Answer 9

yeah