Which of these traits is controlled by a gene with multiple alleles?
a. straight hairline
b. smile dimples
c. widow's peak
d. blood type

What are some possible consequences of preventing prescribed burns and natural wildfires

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall