They do look alike, they should, they are their closest relations, as others have said, time will tell.
No need to kill of males, it doesn't really matter if your hops are seeded. In the UK, due to the presence of verticillium wilt, downy and powdery mildew, growers actively plant male hops (1:1000) to ensure pollination. The male flowers come to maturity as the females are in 'burr', flowering before the cone (fruit) develops, giving the impression they flower early. When pollinated, the initial (stigma) flower closes and then develops the cone. the sooner this closes the better, hence the males. This closure helps keep out the spores which infect the plant and prevent cone development.
As hops are airborne pollinated, not insect, therefore they do not need to produce more aroma to get pollinated. They develop aroma to protect from pests (aphids fly in before aroma develops in maturity). Actually, some wind bruised hops (petal bruising from wind banging them off the bines/leaves) don't look as attractive, with some browning, but do develop more aroma as the plant thinks it is under physical attack, which it want to ward off. This is why EKG seems to develop more aroma than Golding (same hop) as it is grown in the high Weald of Kent, therefore windier.
Before anyone mentions hops and saving bees, it is varroa mite that is killing bees (not crop sprays), and hop beta acids act as a deterrant to these mites.
In the US and Germany, the two biggest equal sized global producers of hops, kill males to keep brewers happy. Brewers feel they are are getting hops not seeds for their money/weight and also think the seeds produce less complementary flavours and reduce head retention, however the flavour and head things has been fully disproved.
BR
Hoppy