In eukaryotes, gene regulation occurs at the level of transcription with the of certain regulatory proteins. which proteins encourage binding of the rna polymerase to the promoter? select one of the options below as your
a. activator
b. enhancer
c. silencer

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to “blossom” in the lake of the ozarks. which of the following would accurately describe these organisms? check all that apply. psychrophiles facultative halophiles extremophiles mesophiles hyperthermophiles

For an animal living a diplontic cycle, meiosis is limited to: producing gametes producing growth fertilization development of the zygote