Which is NOT a principle of genetics?

a) The recessive trait will always show up

b) Traits are determined by gene pairs

c) Traits are passed from parents to offspring

d) Genes are usually dominant or recessive

it's d - life cycles - apex

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers

my answer is the prothallium.brainliest