Hox genes are often similar enough in sequence across lineages that a gene from a distant relative can be used to restore function to a mutated Hox gene, such as when a chicken Hox sequence restores function to a Drosophila Hox gene. What is the best evolutionary explanation for this

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

The smallest parts of these that retain their original properties are called