Which statement gives the best example of natural selection? a a frog has a random gene mutation that changes its color. b a lizard sits under shade in a hot desert. c a bird makes a loud call to attract a mate. d a strain of bacteria has become resistant to antibiotics.

When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?

Are salt and soap nutrients or toxins for yeast? explain.

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.