Which is the best definition for the term rock?
a. a rock is made of one or more minerals that have been cemented, squeezed and heated, or melted and cooled together.
b. a rock is made of a single mineral that has been weathered to become hard. c. a rock is a solid or liquid that forms from the breakdown of minerals. d. a rock is a substance that has luster, cleavage, magnetism, and can scratch other rocks.

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?