Answer:
The answer is the crossing over between chromossomes is reciprocal.
Explanation:
Crossing over between chromossomes is reciprocal, so whenever a recombinant chromosome of one type is produced, there is a recombinant of the opposite type that is also produced.
Answer:
connective tissue, epithelial tissue, muscle tissue, and nervous tissue.
Explanation:
Yes. Brain cells need oxygen to survive.
The answer is; True
Since the body is mainly composed of water solutions, molecules in the body need to be hydrophilic to interact positively with the water. For proteins to dissolve well in the body the hydrophilic groups are located on the outside of the folded proteins while the hydrophobic groups are ‘hidden’ in the inside of the protein. If the hydrophobic parts were located in the outside, the proteins would clump up togetehr and interfere with their functions.
Ribonucleic acid, the basic unit of RNA, has a hydroxyl (-OH) on the second carbon atom. On the other hand, the deoxyribonucleic acid, the basic unit of DNA, has a single hydrogen in the second carbon. This chemical structure difference makes RNA heavier than DNA due to the extra carbon atom.
The RNA/RNA-DNA hybrids can be separated from double-standard DNA using a high-resolution centrifuge due to this difference in weight. The image belows shows the extra oxygen atom in the 2' carbon