What is a fossil?
Fossils are fossilised (petrified) remains of animals/plants. A fossil though, is only a fossil, when it is from a different geological era.
How does that relate to evolution?
Evolution and fossils are very related. When we scan the DNA of different fossils, we find that the DNA can be similar to living species we have today, which helps us trace back their origins.
Tracing back a species origins is not something we do just to see how that species changed along time. When we manage to make an evolutionary chart of a species, we know how they changed, what they changed, and maybe not more, but very importantly, when the previous species were extinguished. If we know when they were extinguished, we can find out what caused that extinction:
- A lack of adaptation.
- Lack of resources.
- Temperature changes.
- Increase of predators.
- Deadly migrations.
- Other natural disasters.
So, in other words, by studying one species, we can study our own planet.
Hope it helped,
BioTeacher101
The mouse spleen goes through the phases of mitosis faster than the onion
root tip.
<h3>What is Mitosis?</h3>
Mitosis is a type of cell division which is responsible for growth and
replacement of worn out tissues. It is divided into phases which include:
The most appropriate choice is therefore mouse spleen going through the
phases faster as it takes a lesser time when all the minutes in the phases are
combined together.
Read more about Mitosis here
Pylogenetic tree diagram is a diagram that represent evolutionary relationships among organisms. It reflect how species or other groups of organism evolved from a series of common ancestor.From this pylogenetic tree diagram the least related organism is insecta and Trilobites
Its the one all the way at the bottom