In what ways are we finding that the gut microbiota affects our health?
What will be an ideal response?
In addition to making vitamins and competing with pathogens, our GI microbiota may impact metabolism and obesity; affect the development of depression and diseases such as diabetes; and train and modulate immune responses.
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Which are possible results of an intragenic inversion (an inversion contained within a gene)? (Select all that apply.)
A) A normal protein may be produced. B) Some of the gene's DNA sequences will be adjacent to DNA sequences to which they are not normally adjacent. C) All of the gene's A, C, G, and T bases remain in the same order as normal. D) The order of genes along the chromosome may be different than normal.
Which of the following must exist in a population before natural selection can act upon that population?
A. variation among individuals in reproductive success B. genetic variation among individuals C. sexual reproduction D. Three of the responses are correct. E. Two of the responses are correct.
Interpret the meaning of an H2 (broad-sense heritability) value that approaches 1.0
What will be an ideal response?
Which of the following components of PCR ensures amplification of the target DNA sequence only, despite the presence of many other DNA sequences?
A. High temperatures B. Polymerases C. dNTPs D. Primers