"The PitX1 gene in some populations of stickleback fish is expressed during development in three different cell types, leading to development of the jaw, the pituitary and pelvic spines. What causes expression of this gene in three different cell types?"

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

What is the similarities and differences between bacteria and eukaryote?

Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?