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
Initiation elongation and termination
false I think, but I don't know for sure
Answer:
<h2>Agree
</h2>
Explanation:
1. Through mitosis, Parental cell divide into two daughter cells with same number of chromosomes.
While meiosis produce 4 daughter cell from a single cell with half the number of chromosomes as compared to parental cell.
2.Meiosis have two cycles , i) meiosis I and ii) meiosis II.
3. In meiosis I, chromosomes first go replication and become double, then cell inter into meiosis I then into meiosis II and finally produce four haploid daughter cells. It is the first step (meiosis I) that generates genetic diversity. During prophase I of meiosis I (meiosis) homologous chromosomes pair and form synapses, a special step of meiosis, which is the main reason of causing diversity.
4. There is crossing over which produce genetic diversity between gametes.
Chlorophyll is in the chloroplast of all living green plants. That's why most plants appear green. They also start to lose chlorophyll when the plant is close to dying. That's why it turns into a black or brown death color. Hope this helps! =)
