This condensation reaction is similar to that in which a peptide bond is formed between two amino acids (Chapter 3). Thus a single nucleic acid strand is a phosphate-pentose polymer (a polyester) with purine and pyrimidine bases as side groups. The links between the nucleotides are called phosphodiester bonds
Chemical messengers that cross the synaptic gaps between neurons. When released by the sending neurons, neurotransmitters travel across the synapse and bind to the receptor sites on the receiving neuron
B) Viens
The veins have valves to keep the blood pumping out and not coming back in the heart.
Answer:
a. sister chromatids separate during anaphase.
Explanation:
Meiosis II is similar to mitosis because in both the divisions, the chromatids separate during anaphase of the respective cell didvisions by splitting of centromere resulting movement of chromatids towards their respective poles in the cell. Both these divisions separate into two daughter cells with the same chromosome number as in the parent cell. Therefore, Meiosis II and mitosis are the equational division as after division chromosome number remains the same as in the parent.