According to stenos principle of superposition, where can the younger layers of rocks be found?

(a) at the bottom

(b) at the top

(c) anywhere

(d) in the middle

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.

What theory states that not only climate but several other factors determine the characteristics of the climax community

Which of the following is not true of the formation of a bacterial translation initiation complex? a. if-3 binding to gtp is required for the charged trna to associate with the first mrna codon. b. n-formylmethionyl-trnafmet binds in the p site. c. if-1, if-2, and if-3 dissociate upon the 50s subunit binding. d. the 30s ribosome associates with the mrna before the 50s ribosome.