Answer:
Option C. is correct.
Explanation:
According to Chargaff's rules, DNA (Deoxyribonucleic Acid) from any species of an organism should have purine and pyrimidine bases in the ratio 
This ratio is very important for solving the structure of DNA.
As per this rule, DNA is double-stranded, and covalent bonds between identical nucleotides hold the strands together.
So, Option C. is correct.
<span>Evidence that supports this includes the lack of true tissue in sponges and the close similarity between choanocytes and choanoflagellates.</span>
The Pituitary Gland is what majorly links the nervous system and the endocrine system.
Answer:
The lymphatic system is a combination of circurlatory and immune systems
Explanation:
yw :))
The first one is A. But I can't see the rest for the next question.
