E. coli is a species of bacteria that causes many different infections in humans. certain e. coli strains have developed resistance to antibiotics, making infections with these strains difficult to treat. how do bacteria such as e. coli, which reproduce asexually, gain new traits such as antibiotic resistance? a. by mutating their dna in response to environmental conditions to gain beneficial traits b. by adapting to changes in environmental conditions without undergoing changes in their dna c. by producing offspring with new gene assortments from genetic recombination, which increases diversity in a population d. by undergoing spontaneous mutations when they replicate, which increases genetic variation in a population

By undergoing spontaneous mutations when they replicate, which increases genetic variation in a population.

Explanation:

The research I did showed it was D.

D.  by undergoing spontaneous mutations when they replicate, which increases genetic variation in a population

Explanation:

Took the test!

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u