Answer:
a. None of the answers given is correct
Explanation:
Nitrogenous bases such as uracil (2, 4-dioxy pyrimidine), thymine (2, 4-dioxy-5-methyl pyrimidine) and cytosine (2-oxy-4-amino pyrimidine) are pyrimidines. Cytosine and thymine are found in the DNA but in the RNA, thymine is replaced by uracil.
The pyrimidine undergoes catabolism through ring cleavage. The end products of catabolism are beta-amino acids, ammonia and carbon dioxide.
Answer:
x= peroxisome z= smooth endoplasmic reticulum
Explanation:
Answer:
The hare population decreases.
Explanation:
The answer is false
When the cells are differentiating in the embryo, they retain the same genetic material. However, certain genes in the differentiating cells are silenced using protein complexes called histones. This makes the genes inaccessible to RNA. Therefore, the process of transcription required in the expression of genes is restricted.