A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.[1] Cell walls are present in most prokaryotes (except mollicute bacteria), in algae, fungi and eukaryotes including plants but are absent in animals. A major function is to act as pressure vessels, preventing over-expansion of the cell when water enters.
Answer:
allele, changing, increasing
Explanation:
The allele that an organism inherits from its parents influence its phenotype. Phenotypes can also be influenced throughout an organism’s lifetime by changing the expression of particular genes. For example, increasing the expression of an allele will often accentuate that allele’s phenotype.
<em>Allele represents the alternate form of a gene. Hence, the allele inherited determines the phenotype of an organism.</em>
<em>The physical appearance of an organism is also influenced by gene regulation. A gene can be turn on/off as the the case may be and this will affect the phenotype.</em>
<em>Increasing the expression of an allele will accentuate or emphasize the phenotype the allele controls and vice versa.</em>
I believe its A. Sedimentary age
Answer:
lack of vegetation at ground-level.
