Question

O c. Mutations are the ultimate source of genetic variation d. More individuals are born than will survive. e. Individuals that possess the most favorable variations have the best chance of reproducing. en 44 If the bacterium Mycobacterium tuberculosis experiences a significant cost for maintaining a specific antibiotic-resistance gene, what would you expect to happen in environments that lack that antibiotic? answered Out of 2.00 question Select one: a. Bacteria with the resistance gene would try to make the cost worthwhile by locating and migrating to microenvironments where the antibiotic is present. b. Bacteria with the resistance gene would be outcompeted and replaced by bacteria that have lost the gene. c. Resistance genes would be maintained in the bacteria in case that antibiotic reappears. O d. The number of genes for antibiotic resistance would increase in the bacteria. 45 Paleontologists studying fossil trilobites (a group of arthropods that are now extinct) would probably be using which of the following species concepts? saved t of 2.00 question Select one: O a. The biological species concept. b. The morphological species concept. o

Answer 1

Option B is correct. Bacteria with resistant genes would be out completed and replaced by bacteria who have lost the gene.

1. As for this bacteria maulaining antibiotere dejestance gene is costly so en enveronment havens no anlibittic survival of fetuers of these bacteria i les than the bacteria which don't have antibiotic resistant gene. a Bacteria having better uruwal have 7 more chance to encreare number that & why option B medo es correct