Answer:
Populations (or gene pools ) evolve as gene frequencies change; individual organisms cannot evolve. Variation in populations is determined by the genes present in the population's gene pool, which may be directly altered by mutation.
Explanation:
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Answer:
Deletion is a type of mutation involving the loss of genetic material. It can be small, involving a single missing DNA base pair,<u><em> or large, involving a piece of a chromosome.</em></u>
Answer:
<u>Abiotic</u>: Clouds, rocks, wind, temperature, ocean currents, sunlight, topograhy, precipitation, air quality, soil, water, humidity, climate.
<u>Biotic</u>: Grass, wolves, fish, microbes, insects, trees, birds, moss, animals, bacteria, organic matter, plants.
Explanation:
Biotic factors are things that are or were once living. Abiotic factors are things that are not and never were living.
Answer:
There are several facts that linked life to a common origin such as:
- Comparative anatomy, where different species have common traits. This includes homology and analogy, vestigial structures.
- Fossil record.
- Species distribution in different continents, some others.
I believe the most valuable evidence is that DNA is the molecule that carries information in all living things ( eukaryotes and prokaryotes) even viruses contain either DNA o RNA. Is difficult to think that life started in different ways but then converged in the same kind of molecule to carry the information.