Answer: Point mutation is easily reversible, thus non-lethal
Explanation:
Point mutation is caused by exchange of a single nucleotide for another. These change is called
1) Transition (when a purine base substitute another purine base, or pyrimidine bases substitute each other)
2) Transversion (when a purine base substitute a pyrimidine base).
However, note that a point mutation can be easily reversed by another point mutation; so, the claim that a nucleotide difference in the Hsr12 gene caused the human disease is inaccurate
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Answer:
They make proteins, They can float free or be connected to endoplasmic reticulum
Answer:
Relative Dating with Fossils: Index Fossils as Indicators of Time
Explanation:
Here is an article that can help.
https://healthblog.uofmhealth.org/heart-health/anatomy-of-a-human-heart
