When farmers want two desirable traits in cows, they often breed individuals that have those traits in the hopes that the offspring will have both desirable traits. What is this practice called? Variation
Adaptation
Natural selection
Artificial selection

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.