Sea bird

... bristle hair number. This is a quanitative trait, determined by multiple genes. Another example which is from a natural situation is beak size in birds. In particular, Darwin's finches in the Galapagos islands. During a period of drought, small-seed plants began to dominate the flora and there ...

See entire post

... But if so, why do they have spikes all over them? They live in a desert, they don't need to defend from anything. Aren't those spikes remnants of bird teeth that cacti possessed at some point of evolution - back when they were birds? Yes cactus are plants. They live in the desert, and there are ...

See entire post

... But if so, why do they have spikes all over them? They live in a desert, they don't need to defend from anything. Aren't those spikes remnants of bird teeth that cacti possessed at some point of evolution - back when they were birds?

See entire post

... give rise to a cactus.even if it is possible by genetic engineering then also the cactus can never ever fly because its a cactus(a plant) not a bird.The plant dont have such evolved genes as birds have

See entire post

... barely related, if at all, evolutionarily, to just sounds that brought early humans together (something like the beginnings of language), because bird songs are appealing without knowing any meaning behind them [at least I think so]. the ability to create simple tones seems pretty rare in the ...

See entire post