Mutations are relatively uncommon because a. frameshift mutations occur very frequently. b. dna is able to repair itself over time. c. physical mutagens such as x-rays seldom damage dna. d. dna repair enzymes often repair errors. e. transposons are constantly moving throughout the genome.

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars

Through wich tissue do sugar get transported to reach the leaves during growth and reproduction

Part a - which gene to compare? in this exercise, you will use the cytochrome c oxidase i (coi) gene to investigate relationships among salmon species. (this gene encodes a protein that functions in the mitochondrial electron transport chain.) you will compare the coi gene sequences from your salmon test samples to the standard sequences for each salmon species. in order for the coi gene to be useful for distinguishing among the different salmon species, which three statements must be true?