what can you conclude about layers that contain only the mammals? are they older le younger than the layers that contain the dinosaurs?

1. key concept list themajor biomes, and give onecharacteristic feature of each.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

What is the ecological role of food chains and food webs