Answer:
Changes in natural flow regimes as a result of water extraction and supply direct modification or destruction of important habitat barriers to the movement of the plants and animals.
Explanation:
Explanation:
Genetic drift has a significant effect on small populations. Here, mutations accumulate in a population over time, altering the frequency of alleles or different forms of a gene. Natural selection can lead to a loss of variation in a population- referred to as genetic drift; the allelic frequency of one trait increases while others become less common. These variations typically occur due to mutation and recombination events.
∴Some variants or alleles can be lost from the population, becoming extinct.
Further Explanation:
During the process of cell division, spontaneous changes within the genome can arise, called mutations. These are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes.
These mutations form variants which become stable within a population, leading to the formation of separate, genetically distinct populations called species.
- mutations accumulate in a population over time, altering the frequency of alleles or different forms of a gene- this is called genetic drift.
Other phenomena further compound genetic drift...
- In the founder effect, the separation of a group from a larger group can decrease genetic diversity, this can create a genetically distinct population
- in the bottleneck effect, a population die off or a barrier to reproduction increases the genetic drift in the population
Learn more about mutations at brainly.com/question/4602376
Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316
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Answer:
D. Spindle Fibers
Explanation:
During anaphase, the centromeres of each chromosome split and the mitotic spindle pulls the sister chromatids apart.
