Answer:
primary, secondary
Explanation:
primary immunodeficiency diseases are present at birth and usually stem from genetic errors, whereas secondary immunodeficiency diseases are acquired after birth and are due to agents such as infections, irradiation, or steroids
A chromosome deletion occurs when a chromosomal fragment is lost. Thus the chromosome is missing some genes. One example of this in humans is know as cry of the cat. It occurs from a deletion on a chromosome number 5. A child that is born has a mental disability a small head with unusual facial features and cries like the sound of a distressed cat. The children rarely live into adulthood.
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Cells use the proteins called receptors which can bind the signaling molecules and initiate a physiological response with the other cells.
<u>Explanation:</u>
- The cell to cell interaction is also known as Cellular interaction. The cells that can communicate with each other in three ways Gap junctions, Tight Junctions, desmosomes.
- The signaling of cells allows communicating with adjacent cells and distant cells.
- Ligand binding to the receptor allows for signal transduction in the cell. To terminate the ligand will be removed from the access with the receptor.
It is determined by the,
size of Image / size of object
Answer:
Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.
Explanation:
