Answer:
The correct answer is option (a)-"zone of cell proliferation".
Explanation:
Chondrocytes are cells within healthy cartilage, that secrete the cartilage's matrix and gets embedded in it. The zone of cell proliferation in bone development is found near the medullary cavity. In this zone, an expansive production of chondrocytes that align in rows is found and the cartilage matrix becomes more basophilic.
For this information to be true, that would mean freckles is a dominant trait, and to not have freckles is a recessive trait. So that means if even someone's genotype has both the freckle and the no freckle gene, their phenotype will be freckles.
Answer:
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust. The lowest layer of the atmosphere is denser than the upper layer.
The correct answer is C. Because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system.
This is important because the organism will react defensively towards the foreign bodies and fight them instead of accept them, so this will make a big problem in the process of fertilization.
I think the correct answer from the choices listed above is the last option. It is the need for oxygen that affects the heart rate in mammals. Depending on the needs of these organism, the oxygen needed for the processes inside the body varies which then affect the heart rate.
