Which list below describes a possible path of rain through the water cycle? a. transpiration, condensation, precipitation, runoff b. evaporation, precipitation, run off, lake storage

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred