What are two different forms of a single gene called? A.
traits

B.
factors

C.
alleles <<<

D.
chromosomes

Two different forms of a single gene are called 'alleles

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.