Hawaiian happy face spiders from the island of Maui can have different markings, as shown below. A single gene determines the markings on the spiders. A plain spider is crossed with a patterned spider. The patterned spider is h0m0zygous. The pattern allele is dominant to the plain allele.

What percentage of the offspring from this cross are expected to be patterned instead of plain?

      n

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