No links pls Scientists have concluded that the AS genotype as an adaptation for survival in Africa. Support that conclusion in terms of natural
selection.

A) The frequency of the AS allele increases proportionately to the number of
Africans in the population.

B) Because malaria does not exist in the U. S. the AS allele does not provide
any advantage to survival there.

C) As the frequency of malaria increases so does the frequency of the AS
allele combination as it protects against getting malaria.

D) Those without the AS genotype die out due to sickle cell disease; the
populations left with a greater allelic frequency of the AS genotype.

C- a hypothesis or d- an observation

The basic building blocks of dna and rna are nucleotides

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein