Bacteria plays an important role in the cycling of nitrogen. Which of the following organisms is NOT a part of this cycle? *

What is the difference between an igneous, sedimentary and metamorphic rock

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

20 the main source of energy for our planet comes from the