Answer:
Option (a).
Explanation:
Counter current flow may be defined as the flow of water in the opposite direction with the flow of blood in the body. This countercurrent flow is generally occurs in fishes.
The one main benefit of the countercurrent flow is the absorption of maximum oxygen as the water flows inside the body. Approximately, three time more oxygen is extracted during the counter current flow. The concentration gradient is maintained up to the whole length of gills.
Thus, the correct answer is option (a).
What an object is made of
Answer:
Bro..The enzymes are encoded and used by viruses that use reverse transcription as a step in the process of replication...I know that much...
Ans. Phenylalanine.
Genetic codes or codons are triplet codes, made up of three nucleotides. Each genetic code codes for a particular amino acid during translation. There are total 64 codons, out of which 61 codes for amino acids, while 3 act as stop codons.
According to Universal Genetic Code chart, first genetic code is UUU that codes for phenylalanine amino acid.
Thus, the correct answer is option). 'phenylalanine.'
Asexual reproduction has one parent and are genetically identical as the parent
