Answer:
Rosalind Franklin made an X-ray image of the DNA molecule, that has revealed the following:
1. The nitrogenous bases are near the center of the DNA molecule
2. DNA molecule is composed out of two strands
3. DNA molecule has the shape of a helix
Watson and Crick made the first model of the DNA molecule based on that very picture. They concluded that the strands are antiparallel and that they are composed of nucleotides.
Explanation:
There are some possible answers which all mean the same thing:
- Produce fertile offspring
- Produce offspring
- Reproduce
→ Only individuals of a same species (sometimes genus) can reproduce because in order to reproduce animals need to have a similar genetic code, and there is now code more similar than the one of individuals of their own species.
Hope it helped,
BioTeacher101
Answer:
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
Explanation:
deoxyribose + phosphate group + thymine
True, the plasma membrane is selectively permeable and controls the various substances that are allowed into the cell and that are allowed to leave the cell.
Answer: bedrock composition and climate
Explanation:
