31. What are the chances that a puppy will have a spotted coat, if his mother is solid and his father is heterozygous for a spotted coat?

Assuming that a spotted coat is a dominant trait, the chances are 50%

Explanation:

If you make a punnet square using a homozygous recessive father and a heterozygous dominant mother, the results will come out to be half heterozygous dominant and half homozygous recessive

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