1) What is an ecosystem?
a. A region with a specific climate.
b. A community of interacting organisms and
their environment.
c. An area of untouched nature.
d. None of the above.

9. the history of life on earth is recorded in

3test questions with answers on incomplete dominance

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