Answer:
Natural selection causes change in allele frequencies within a population.
So option A is correct one.
Explanation:
Natural selection generally work on an organism’s phenotype, or observable features. Phenotype is often largely a product of genotype (the alleles, or gene versions, the organism carries). When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.
When it triggers an abnormal or vigorous immune responce, treating the antigen that would normally cause no threat as something harmful.
The nurse expects to find a prolonged partial thromboplastin time Icterus of skin swollen abdomen. Laennec's cirrhosis is a disease of the liver in which the normal lobular architecture is lost, with fibrosis and later nodular regeneration. It can be associated with inflammatory polyarthritis, most commonly affecting the shoulders, elbows and knees.
It would turn into GCCATG
