BIOL 101 The Biology of Change Through Time Quiz- Liberty

BIOL 101 The Biology of Change Through Time Quiz- Liberty The Design theorist comes to the conclusion that most mutations occurring today are harmful because there are fewer kinds of organisms on the planet today than ever before. changes to base sequence in DNA will uniformly stop the transcription process. no such thing as a helpful mutation has ever been observed. natural selection can favor only one gene at a time. they are deteriorative changes made to something that was elegantly designed. IncorrectQuestion 2 0 / 3.2 pts One important value that disruptive selection can have to a natural population is that it can eliminate rare individuals whose sexuality is intermediate between male and female. will remove from the population all individuals whose behavioral traits vary greatly from the populational norms. collect and save those individuals whose phenotypes are most like the standard phenotype of the species. quickly locates and preserves those individuals best adapted to defending the rest of the population from predators. can act positively on a population in which an abnormally high number of harmful mutations is occurring. Question 3 3.2 / 3.2 pts One problem associated with evolving a system in which RNA bases code for amino acids is that amino acids are basic and RNA nucleotides are acidic in chemical nature. the correct bonding of amino acids to tRNAs requires protein catalysis—we need mature proteins to begin making the first proteins. the amino acids would then have to become building blocks of proteins instead of DNA. the system would always be confusing DNA molecules with RNA molecules in setting up and operating the initial coding process. ribosomes will prefer DNA over RNA in the formation of peptide bonds. Question 4 3.2 / 3.2 pts The sentence, “O you, who look on this our machine, do not be sad that with others you are fated to die, but rejoice that our Creator has endowed us with such an excellent instrument as the intellect” was first spoken by Leonardo da Vinci Charles Darwin Verrocchio John Henslow Thomas Malthus Question 5 3.2 / 3.2 pts Which of the following could be a new mutation needed to generate appropriate structures for flight feathers? a mutation that: matches barbule length to the space between feather barbs creates length variety among coracoids so that they are appropriately hidden shortens the length of the humerus bone shortens barbules so that they don’t interfere with air flow patterns decreases the number and size of feather placodes. Question 6 3.2 / 3.2 pts Mycoplasma genitalium is well known for the _________ infections it causes. genital tract spleen brain liver wide variety of organ Question 7 3.2 / 3.2 pts Natural selection is limited in its effectiveness in preserving new favorable mutations in an environment that . . . . . ..