I believe vestigial structures are evidence of evolution because organisms inherit anatomy from their ancestors.
Hope that helps.
Answer:
Most biomolecules are organic compounds, and just four elements—oxygen, carbon, hydrogen, and nitrogen—make up 96% of the human body's mass.
Explanation:
Answer: 20%
Explanation:
I haven't learned this exactly yet, but if there is 30% of thymine, then there has to be 30% of adenine because they match. That would leave 40% for other Guanine and Cytosine, and since they also match that means that it is exactly half, meaning that there is 20% Guanine and 20% Cytosine.
If they both have Rr. The possibilities will be RR, Rr, Rr, rr. They have a 25% chance of inheriting the recessive trait instead of their dominant trait. That means that these traits are hidden and not expressed in the previous generation.