Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring
The question is incomplete as it does not have the options which are-
a. migration
b. genetic drift
c. mutation
d. stabilizing selection
Answer:
The correct answer will be option- migration
Explanation:
Migration refers to the long-distance movement of the individual, group and population. The migration enables the flow of genes from one population into another called gene flow. Migration is the strongest force of gene flow after selection.
In the given case, since the allele frequency of the population has changed due to the migration of the 200 snakes from a population of 5000 snakes, therefore, migration is the correct answer.
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period.
How does the water needed to carry out photosynthesis get to leaves?
A. through chlorophyll molecules
B. through vascular bundles
C. through stomata
D. through mesophyll cells
