INFER Some fossils from the Cambrian period are unlike any organisms living today. Do you think the two organisms in the
photos belong to the same group? How could scientists determine
whether these organisms are related?

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Which is the best example of plant tissue? the answer is d (just took the test)