Answer:
Genetic drift
Explanation:
Genetic drift can also be referred to as allelic drift, it refers to the variation in allelic frequencies within a particular population over a period of time. It can also be referred to as the random fluctuations in the number of genotypes within a population. Genetic drift is not influenced by the environment and is usually more pronounced in a small population of organisms.
For example, a population of birds can consist of green feathers and blue feathers with the green feathers as the dominant allele, but as a result of random fluctuations, the offspring may all be with green feathers and hence could eliminate or reduce the allele responsible for blue feathers over time.
B.cell wall
Cellulose is an important structural component of the primary cell wall of green plants.
<span>There are many types of algae. Some of which are brown algae or the Phaeophyta/Phaeophytes,the green algae which is also known as the Chlorophytes, and the Chrysophytes or the golden algae. Among these algae, only the Chrysophytes shows distinct alternation of generations or metagenesis.</span>
