The genetic variation of organisms has three sources they are mutation, gene flow and sexual reproduction.
Explanation:
Genetic variation are caused by mutation , random mating, random fertilization and recombination between homologous chromosomes during meiosis.
It is a variation in alleles and genes, among the populations. There is a genetic variation within the family of closely- related individuals. If it is a neighborhood there are many families and there is also genetic variation among that group.
An exact genetic copy of the parent organism is produced in asexual reproduction. It only introduces the genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.
The structure and function relate because what the structure is made of influences what the organ's function is. An example is that the heart is made of strong muscle cells. Therefore, it is fit to do the job of pumping blood around <span>the body.</span>
Answer:
Ecosystem, community, population, organism
Explanation:
Ecosystem: It is a level of organization in which different communities of different organisms along with their related abiotic factors, interact with each other.
This is a level of organization smaller than a biosphere and a biome.
Community: It is a level of organization in which different populations interact with each other while living with each other. It is a level below ecosystem but above population.
Population: A group of organisms that belong to same specie and can interact with each other to produce fertile offsprings.
It is a level below ecosystem and community but above organism.
Organism:
A living organism that is made up of organs and organ systems. This is a level below population.
Hope it helps!
