There are five mechanisms involve in diversity of organisms:
genetic drift, mutation, natural selection, gene flow and non random mating.
Explanation:
Genetic drift: It is a mechanism in which frequency of the allele changes within a population due to random sampling. It causes decrease in diversity in organism and can result in new species.
Mutation: Mutation in the genes is the most important reason of diversity.the change in DNA causes introduction of new alleles. Harmful mutations do not le species evolve by delimiting them from reaching sexual maturity.
Gene flow: The allele flow happens when a new gene is introduced into a population either by immigration or random mating. when two populations of same species share genes, variation occurs.
Natural selection: The favourable traits for survival are transferred to the offspring. It allows them to adapt better to the environment. It allows maintenance diversity of organism.
Non random mating: The mating between the individual with varied genotype will result in genetic variation.
Answer:
a lack of resources and stability can be a major factor for this situation, meaning they dont have much of a choice. they become a nuisance to richer clients and are therefore removed and dumped away.
Answer:
The bacteria replication leads to swelling, which irritates nerves in the dermis Explanation:
so B is your answer
hope this helps you
Answer:
the stimula is like nervs your body pumps it threw your body to
Explanation:
it is a common thing
Answer:
If <u>bacterial plague</u> (a.k.a. dental plague) accumulates around the teeth over a period of time, periodontal disease may result.
