Answer:
Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population
Explanation:
hope this helps!!!!
Answer:
it should be island arc (:
Enzymes can be best described as catalysts in living systems. This is because enzymes accelerate chemical reactions without being used up in the process.
Answer:
Option B, Mechanical Isolation
Explanation:
Mechanical isolation is a phenomena which prevent species from mating each other.
In mechanical isolation, species have different physical structure due to which they are unable to interbreed.
For example - In snails, two certain species are unable to mate as the shell of one is coiled in the same direction as that of shell of other. Hence, two right coiled snails cannot breed with each other. The same applies to the left side tailed species.
Hence, option B is correct
Answer:
In cystic fibrosis, there is an alteration in the chlorine channels of all cells, so all kinds of body secretions are affected.
Body fluids thicken at the intestinal level, forming a mucus that blocks the ducts that carry digestive enzymes from the pancreas to the intestine.
These enzymes are responsible for generating nutrients or proteins, vitamins and even fats are absorbed.
Explanation:
This intestinal factor results in malnutrition, growth impairment, hypovitaminosis, decay, anemia, capillary fragility, decline and fatigue.