(Q).
Q: What are variants of genes called? Choices: - antigens - mutations - allergens - alleles A:
(A).
alleles

(Q).
Q: What is the use of technology to change the genetic makeup of living things for human purposes? Choices: - biological utility - biological engineering - genetic employing - genetic engineering A:
(A).
genetic engineering

(Q).
Q: A unique characteristic of mammals is the ability to chew, this happens by the temporalis and the masseter allowing what? Choices: - Up and down - Bakward and forward - Grinding - side-to-side movement A:
(A).
side-to-side movement