After extended use of the drugs that treat hiv, the virus often becomes resistant and the drugs no longer work? true or false?

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 similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above