Then, a mutation occurred that causes the cysteine to mutate into another amino acid, alanine. Alanine is identical to cysteine, except cysteine's SH is replaced with alanine's H. What levels of protein structure were definitely or very probably changed by this change

What are four key elements of the study of economics?

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Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.