Answer:
The correct term is - extrinsic stain.
Explanation:
Extrinsic stains are normally present on the surface of a tooth and occur due to taking pigmented beverages such as coffee, tea, carbonated drinks, caramel coloring, and foods. Smoking cigarettes is also one of the reasons that can cause an extrinsic stain.
This can be removed by dentists or professionals like hygienists. The stain particles act on the outer surface of the teeth and pigmented them which cause stain yellowish or brownish in individuals.
Thus, the correct answer is - extrinsic stain.
Answer:
b. on the X chromosome
Explanation:
Sex-linked genes refer to genes located on sex chromosomes that are involved in determining traits. In humans, the male sex chromosome Y has few sex-linked genes. Already, the female sex chromosome X has a large amount of genes involved in determining various gender-related characteristics, so it has become usual to determine that the genes described as sex-linked are located on the x-chromosome.
Answer:
Explanation:
Anemia is lack of RBC in body or disfunctional RBCs. Risk factors would be things that make you prone to have this disease. Some commonly known factors are:
- Age (more common as you keep aging)
- Family history (genetics does make you less or more prone)
For more info visit: https://www.mayoclinic.org/diseases-conditions/anemia/symptoms-causes/syc-20351360
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