Answer: i think, Endochondral ossification occurs at two distinct sites in the vertebrate long bone – the primary (diaphyseal) and the secondary (epiphyseal) sites of ossification. Bone development initiates at the primary site. The secondary (epiphyseal) site is under independent control and is ossified later (Figure 1b).
The correct answer is self-renewal.
The hemopoietic stem cells, found in the red bone marrow, is a usual example of adults stem cells. These stem cells, divide into different kind of blood cells. The bone marrow also comprises a second kind of adult stem cell called mesenchymal or stromal stem cell. The adult stem cells have also been witnessed in various other kinds of tissues like skeletal muscle, brain, skin, blood vessels, heart, and the teeth.
These adult stem cells possess the tendency to differentiate into other kinds of cells, and can also differentiate in self-renewal to generate more of the similar kind of stem cells.
Self-renewal refers to the procedure by which the differentiation of stem cells takes place to produce more stem cells, continuing the pool of stem cells all through the life. Self-renewal is considered as the differentiation with the sustenance of the undifferentiated state.
Answer:
From Top to bottom:
1. 15000 BCE Chinese Civilization emerges on Yellow River
2. 551 BCE Confucious is Born
3. 259 BCE Emperor Qin Shi Huangdi becomes the first emperor
4. 220 BCE The Great Wall of China is Constructed
Explanation:
These are all of the events that happened put in chronological order from latest to most recent.
I hope this helped!
Answer:
This is because our genetic makeup may be closely similar to one another, an individuals DNA sequence is unique only to the individual much like ones fingerprints.
Explanation:
When their concentration increases it is called bio accumulation